algorithm-weekly

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algorithm-weekly

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일주일에 한번씩 출제되는 알고리즘 문제 목록입니다.

algorithm-weekly 최신버젼 다운로드

최종 버전 다운로드 (.zip)

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# 알고리즘 문제 리스트
[카카오 오픈채팅 알고리즘 공부방](https://open.kakao.com/o/gy9t00ib)

# 12.22
1. Leetcode : 66. Plus One
2. Leetcode : 456. 132 Pattern
3. Leetcode : 2035. Partition Array Into Two Arrays to Minimize Sum Difference

# 11.18
1. Leetcode : 897. Increasing Order Search Tree
2. Leetcode : 1593. Split a String Into the Max Number of Unique Substrings
3. Leetcode : 805. Split Array With Same Average

# 11.11
1. Leetcode : 2180. Count Integers With Even Digit Sum
2. Leetcode : 910. Smallest Range II
3. Leetcode : 1568. Minimum Number of Days to Disconnect Island

# 11.3
1. Leetcode : 504. Base 7
2. Leetcode : 2101. Detonate the Maximum Bombs
3. Leetcode : 1172. Dinner Plate Stacks

# 10.27
1. Leetcode : 504. Base 7
2. Leetcode : 1003. Check If Word Is Valid After Substitutions
3. Leetcode : 2030. Smallest K-Length Subsequence With Occurrences of a Letter

# 10.20
1. Leetcode : 596. Classes More Than 5 Students
2. Leetcode : 475. Heaters
3. Leetcode : 517. Super Washing Machines

# 10.13
1. Leetcode : 1729. Find Followers Count
2. Leetcode : 3. Longest Substring Without Repeating Characters
3. Leetcode : 127. Word Ladder

# 9.29
1. Leetcode : 1848. Minimum Distance to the Target Element
2. Leetcode : 713. Subarray Product Less Than K
3. Leetcode : 1723. Find Minimum Time to Finish All Jobs

# 9.22
1. Leetcode : 463. Island Perimeter
2. Leetcode : 19. Remove Nth Node From End of List
3. Leetcode : 778. Swim in Rising Water

# 9.1
1. [Leetcode : 231. Power of Two](https://leetcode.com/problems/power-of-two/)
2. [Leetcode : 1846. Maximum Element After Decreasing and Rearranging](https://leetcode.com/problems/maximum-element-after-decreasing-and-rearranging/)
3. [Leetcode : 960. Delete Columns to Make Sorted III](https://leetcode.com/problems/delete-columns-to-make-sorted-iii/)

# 8.25
1. [Leetcode : 1629. Slowest Key](https://leetcode.com/problems/slowest-key/)
2. [Leetcode : 918. Maximum Sum Circular Subarray](https://leetcode.com/problems/maximum-sum-circular-subarray/)
3. [Leetcode : 995. Minimum Number of K Consecutive Bit Flips](https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips/)

# 7.28
1. [Leetcode : 1422. Maximum Score After Splitting a String](https://leetcode.com/problems/maximum-score-after-splitting-a-string/)
2. [Leetcode : 61. Rotate List](https://leetcode.com/problems/rotate-list/)
3. [Leetcode : 65. Valid Number](https://leetcode.com/problems/valid-number/)

# 7.21
1. [Leetcode : 1464. Maximum Product of Two Elements in an Array](https://leetcode.com/problems/maximum-product-of-two-elements-in-an-array/)
2. [Leetcode : 1997. First Day Where You Have Been in All the Rooms](https://leetcode.com/problems/first-day-where-you-have-been-in-all-the-rooms/)
3. [Leetcode : 1755. Closest Subsequence Sum](https://leetcode.com/problems/closest-subsequence-sum/)

# 7.7
1. [Leetcode : 35. Search Insert Position](https://leetcode.com/problems/search-insert-position/)
2. [Leetcode : 880. Decoded String at Index](https://leetcode.com/problems/decoded-string-at-index/)
3. [Leetcode : 601. Human Traffic of Stadium](https://leetcode.com/problems/human-traffic-of-stadium/)

# 6.16
1. [Leetcode : 389. Find the Difference](https://leetcode.com/problems/find-the-difference/)
2. [Leetcode : 1702. Maximum Binary String After Change](https://leetcode.com/problems/maximum-binary-string-after-change/)
3. [Leetcode : 1840. Maximum Building Height](https://leetcode.com/problems/maximum-building-height/)

# 6.9
1. [Leetcode : 697. Degree of an Array](https://leetcode.com/problems/degree-of-an-array/)
2. [Leetcode : 889. Construct Binary Tree from Preorder and Postorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-postorder-traversal/)
3. [Leetcode : 1840. Maximum Building Height](https://leetcode.com/problems/maximum-building-height/)

# 6.2
1. [Leetcode : 459. Repeated Substring Pattern](https://leetcode.com/problems/repeated-substring-pattern/)
2. [Leetcode : 739. Daily Temperatures](https://leetcode.com/problems/daily-temperatures/)
3. [Leetcode : 591. Tag Validator](https://leetcode.com/problems/tag-validator/)

# 5.26
1. [Leetcode : 1710. Maximum Units on a Truck](https://leetcode.com/problems/maximum-units-on-a-truck/)
2. [Leetcode : 622. Design Circular Queue](https://leetcode.com/problems/design-circular-queue/)
3. [Leetcode : 2286. Booking Concert Tickets in Groups](https://leetcode.com/problems/booking-concert-tickets-in-groups/)

# 5.19
1. [Leetcode : 1795. Rearrange Products Table](https://leetcode.com/problems/rearrange-products-table/)
2. [Leetcode : 450. Delete Node in a BST](https://leetcode.com/problems/delete-node-in-a-bst/)
3. [Leetcode : 1425. Constrained Subsequence Sum](https://leetcode.com/problems/constrained-subsequence-sum/)

# 5.12
1. [Leetcode : 2062. Count Vowel Substrings of a String](https://leetcode.com/problems/count-vowel-substrings-of-a-string/)
2. [Leetcode : 2055. Plates Between Candles](https://leetcode.com/problems/plates-between-candles/)
3. [Leetcode : 493. Reverse Pairs](https://leetcode.com/problems/reverse-pairs/)

# 4.28
1. [Leetcode : 1779. Find Nearest Point That Has the Same X or Y Coordinate](https://leetcode.com/problems/find-nearest-point-that-has-the-same-x-or-y-coordinate/)
2. [Leetcode : 1733. Minimum Number of People to Teach](https://leetcode.com/problems/minimum-number-of-people-to-teach/)
3. [Leetcode : 972. Equal Rational Numbers](https://leetcode.com/problems/equal-rational-numbers/)

# 4.21
1. [Leetcode : 108. Convert Sorted Array to Binary Search Tree](https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/)
2. [Leetcode : 1310. XOR Queries of a Subarray](https://leetcode.com/problems/xor-queries-of-a-subarray/)
3. [Leetcode : 972. Equal Rational Numbers](https://leetcode.com/problems/equal-rational-numbers/)

# 4.7
1. [Leetcode : 67. Add Binary](https://leetcode.com/problems/add-binary/)
2. [Leetcode : 1685. Sum of Absolute Differences in a Sorted Array](https://leetcode.com/problems/sum-of-absolute-differences-in-a-sorted-array/)
3. [Leetcode : 710. Random Pick with Blacklist](https://leetcode.com/problems/random-pick-with-blacklist/)

# 3.31
1. [Leetcode : 1309. Decrypt String from Alphabet to Integer Mapping](https://leetcode.com/problems/decrypt-string-from-alphabet-to-integer-mapping/)
2. [Leetcode : 63. Unique Paths II](https://leetcode.com/problems/unique-paths-ii/)
3. [Leetcode : 1293. Shortest Path in a Grid with Obstacles Elimination](https://leetcode.com/problems/shortest-path-in-a-grid-with-obstacles-elimination/)

# 3.27
1. [Leetcode : 637. Average of Levels in Binary Tree](https://leetcode.com/problems/average-of-levels-in-binary-tree/)
2. [Leetcode : 779. K-th Symbol in Grammar](https://leetcode.com/problems/k-th-symbol-in-grammar/)
3. [Leetcode : 1643. Kth Smallest Instructions](https://leetcode.com/problems/kth-smallest-instructions/)

# 3.3
1. [Leetcode : 2259. Remove Digit From Number to Maximize Result](https://leetcode.com/problems/remove-digit-from-number-to-maximize-result/)
2. [Leetcode : 1110. Delete Nodes And Return Forest](https://leetcode.com/problems/delete-nodes-and-return-forest/)
3. [Leetcode : 480. Sliding Window Median](https://leetcode.com/problems/sliding-window-median/)

# 2.17
1. [Leetcode : 2047. Number of Valid Words in a Sentence](https://leetcode.com/problems/number-of-valid-words-in-a-sentence/)
2. [Leetcode : 2058. Find the Minimum and Maximum Number of Nodes Between Critical Points](https://leetcode.com/problems/find-the-minimum-and-maximum-number-of-nodes-between-critical-points/)
3. [Leetcode : 2019. The Score of Students Solving Math Expression](https://leetcode.com/problems/the-score-of-students-solving-math-expression/)

# 2.10
1. [Leetcode : 1009. Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/)
2. [Leetcode : 865. Smallest Subtree with all the Deepest Nodes](https://leetcode.com/problems/smallest-subtree-with-all-the-deepest-nodes/)
3. [Leetcode : 2025. Maximum Number of Ways to Partition an Array](https://leetcode.com/problems/maximum-number-of-ways-to-partition-an-array/)

# 2.3
1. [Leetcode : 1736. Latest Time by Replacing Hidden Digits](https://leetcode.com/problems/latest-time-by-replacing-hidden-digits/)
2. [Leetcode : 1546. Maximum Number of Non-Overlapping Subarrays With Sum Equals Target](https://leetcode.com/problems/maximum-number-of-non-overlapping-subarrays-with-sum-equals-target/)
3. [Leetcode : 2076. Process Restricted Friend Requests](https://leetcode.com/problems/process-restricted-friend-requests/)

# 1.20
1. [Leetcode : 680. Valid Palindrome II](https://leetcode.com/problems/valid-palindrome-ii/)
2. [Leetcode : 1958. Check if Move is Legal](https://leetcode.com/problems/check-if-move-is-legal/)
3. [Leetcode : 1912. Design Movie Rental System](https://leetcode.com/problems/design-movie-rental-system/)

# 1.13
1. [Leetcode : 94. Binary Tree Inorder Traversal](https://leetcode.com/problems/binary-tree-inorder-traversal/)
2. [Leetcode : 1080. Insufficient Nodes in Root to Leaf Paths](https://leetcode.com/problems/insufficient-nodes-in-root-to-leaf-paths/)
3. [Leetcode : 996. Number of Squareful Arrays](https://leetcode.com/problems/number-of-squareful-arrays/)

# 1.6
1. [Leetcode : 1741. Find Total Time Spent by Each Employee](https://leetcode.com/problems/find-total-time-spent-by-each-employee/)
2. [Leetcode : 1881. Maximum Value after Insertion](https://leetcode.com/problems/maximum-value-after-insertion/)
3. [Leetcode : 2262. Total Appeal of A String](https://leetcode.com/problems/total-appeal-of-a-string/)

# 12.30
1. [Leetcode : 1640. Check Array Formation Through Concatenation](https://leetcode.com/problems/check-array-formation-through-concatenation/)
2. [Leetcode : 795. Number of Subarrays with Bounded Maximum](https://leetcode.com/problems/number-of-subarrays-with-bounded-maximum/)
3. [Leetcode : 1879. Minimum XOR Sum of Two Arrays](https://leetcode.com/problems/minimum-xor-sum-of-two-arrays/)

# 12.24
1. [Leetcode : 1720. Decode XORed Array](https://leetcode.com/problems/decode-xored-array/)
2. [Leetcode : 811. Subdomain Visit Count](https://leetcode.com/problems/subdomain-visit-count/)
3. [Leetcode : 32. Longest Valid Parentheses](https://leetcode.com/problems/longest-valid-parentheses/)

# 12.16
1. [Leetcode : 961. N-Repeated Element in Size 2N Array](https://leetcode.com/problems/n-repeated-element-in-size-2n-array/)
2. [Leetcode : 1557. Minimum Number of Vertices to Reach All Nodes](https://leetcode.com/problems/minimum-number-of-vertices-to-reach-all-nodes/)
3. [Leetcode : 2025. Maximum Number of Ways to Partition an Array](https://leetcode.com/problems/maximum-number-of-ways-to-partition-an-array/)

# 12.9
1. [Leetcode : 169. Majority Element](https://leetcode.com/problems/majority-element/)
2. [Leetcode : 15. 3Sum](https://leetcode.com/problems/3sum/)
3. [Leetcode : 761. Special Binary String](https://leetcode.com/problems/special-binary-string/)

# 12.2
1. [Leetcode : 965. Univalued Binary Tree](https://leetcode.com/problems/univalued-binary-tree/)
2. [Leetcode : 638. Shopping Offers](https://leetcode.com/problems/shopping-offers/)
3. [Leetcode : 2209. Minimum White Tiles After Covering With Carpets](https://leetcode.com/problems/minimum-white-tiles-after-covering-with-carpets/)

# 11.25
1. [Leetcode : 617. Merge Two Binary Trees](https://leetcode.com/problems/merge-two-binary-trees/)
2. [Leetcode : 910. Smallest Range II](https://leetcode.com/problems/smallest-range-ii/)
3. [Leetcode : 857. Minimum Cost to Hire K Workers](https://leetcode.com/problems/minimum-cost-to-hire-k-workers/)

# 11.20
1. [Leetcode : 1893. Check if All the Integers in a Range Are Covered](https://leetcode.com/problems/check-if-all-the-integers-in-a-range-are-covered/)
2. [Leetcode : 659. Split Array into Consecutive Subsequences](https://leetcode.com/problems/split-array-into-consecutive-subsequences/)
3. [Leetcode : 805. Split Array With Same Average](https://leetcode.com/problems/split-array-with-same-average/)

# 11.11
1. [Leetcode : 2138. Divide a String Into Groups of Size k](https://leetcode.com/problems/divide-a-string-into-groups-of-size-k/)
2. [Leetcode : 475. Heaters](https://leetcode.com/problems/heaters/)
3. [Leetcode : 1568. Minimum Number of Days to Disconnect Island](https://leetcode.com/problems/minimum-number-of-days-to-disconnect-island/)

# 11.4
1. [Leetcode : 872. Leaf-Similar Trees](https://leetcode.com/problems/leaf-similar-trees/)
2. [Leetcode : 1052. Grumpy Bookstore Owner](https://leetcode.com/problems/grumpy-bookstore-owner/)
3. [Leetcode : 483. Smallest Good Base](https://leetcode.com/problems/smallest-good-base/)

# 10.28
1. [Leetcode : 374. Guess Number Higher or Lower](https://leetcode.com/problems/guess-number-higher-or-lower/)
2. [Leetcode : 1785. Minimum Elements to Add to Form a Given Sum](https://leetcode.com/problems/minimum-elements-to-add-to-form-a-given-sum/)
3. [Leetcode : 1463. Cherry Pickup II](https://leetcode.com/problems/cherry-pickup-ii/)

# 10.21
1. [Leetcode : 504. Base 7](https://leetcode.com/problems/base-7/)
2. [Leetcode : 1785. Minimum Elements to Add to Form a Given Sum](https://leetcode.com/problems/minimum-elements-to-add-to-form-a-given-sum/)
3. [Leetcode : 2030. Smallest K-Length Subsequence With Occurrences of a Letter](https://leetcode.com/problems/smallest-k-length-subsequence-with-occurrences-of-a-letter/)

# 10.14
1. [Leetcode : 680. Valid Palindrome II](https://leetcode.com/problems/valid-palindrome-ii/)
2. [Leetcode : 1140. Stone Game II](https://leetcode.com/problems/stone-game-ii/)
3. [Leetcode : 127. Word Ladder](https://leetcode.com/problems/word-ladder/)

# 10.8
1. [Leetcode : 463. Island Perimeter](https://leetcode.com/problems/island-perimeter/)
2. [Leetcode : 2279. Maximum Bags With Full Capacity of Rocks](https://leetcode.com/problems/maximum-bags-with-full-capacity-of-rocks/)
3. [Leetcode : 924. Minimize Malware Spread](https://leetcode.com/problems/minimize-malware-spread/)

# 9.30
1. [Leetcode : 1848. Minimum Distance to the Target Element](https://leetcode.com/problems/minimum-distance-to-the-target-element/)
2. [Leetcode : 79. Word Search](https://leetcode.com/problems/word-search/)
3. [Leetcode : 924. Minimize Malware Spread](https://leetcode.com/problems/minimize-malware-spread/)

# 9.23
1. [Leetcode : 1496. Path Crossing](https://leetcode.com/problems/path-crossing/)
2. [Leetcode : 2279. Maximum Bags With Full Capacity of Rocks](https://leetcode.com/problems/maximum-bags-with-full-capacity-of-rocks/)
3. [Leetcode : 778. Swim in Rising Water](https://leetcode.com/problems/swim-in-rising-water/)

# 9.16
1. [Leetcode : 944. Delete Columns to Make Sorted](https://leetcode.com/problems/delete-columns-to-make-sorted/)
2. [Leetcode : 2233. Maximum Product After K Increments](https://leetcode.com/problems/maximum-product-after-k-increments/)
3. [Leetcode : 960. Delete Columns to Make Sorted III](https://leetcode.com/problems/delete-columns-to-make-sorted-iii/)

# 9.9
1. [Leetcode : 1351. Count Negative Numbers in a Sorted Matrix](https://leetcode.com/problems/count-negative-numbers-in-a-sorted-matrix/)
2. [Leetcode : 143. Reorder List](https://leetcode.com/problems/reorder-list/)
3. [Leetcode : 2092. Find All People With Secret](https://leetcode.com/problems/find-all-people-with-secret/)

# 9.2
1. [Leetcode : 1470. Shuffle the Array](https://leetcode.com/problems/shuffle-the-array/)
2. [Leetcode : 817. Linked List Components](https://leetcode.com/problems/linked-list-components/)
3. [Leetcode : 2163. Minimum Difference in Sums After Removal of Elements](https://leetcode.com/problems/minimum-difference-in-sums-after-removal-of-elements/)

# 8.25
1. [Leetcode : 1629. Slowest Key](https://leetcode.com/problems/slowest-key/)
2. [Leetcode : 817. Linked List Components](https://leetcode.com/problems/linked-list-components/)
3. [Leetcode : 995. Minimum Number of K Consecutive Bit Flips](https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips/)

# 8.19
1. [Leetcode : 1556. Thousand Separator](https://leetcode.com/problems/thousand-separator/)
2. [Leetcode : 2285. Maximum Total Importance of Roads](https://leetcode.com/problems/maximum-total-importance-of-roads/)
3. [Leetcode : 1610. Maximum Number of Visible Points](https://leetcode.com/problems/maximum-number-of-visible-points/)

# 8.12
1. [Leetcode : 492. Construct the Rectangle](https://leetcode.com/problems/construct-the-rectangle/)
2. [Leetcode : 61. Rotate List](https://leetcode.com/problems/rotate-list/)
3. [Leetcode : 1223. Dice Roll Simulation](https://leetcode.com/problems/dice-roll-simulation/)

# 8.5
1. [Leetcode : 101. Symmetric Tree](https://leetcode.com/problems/symmetric-tree/)
2. [Leetcode : 1604. Alert Using Same Key-Card Three or More Times in a One Hour Period](https://leetcode.com/problems/alert-using-same-key-card-three-or-more-times-in-a-one-hour-period/)
3. [Leetcode : 1434. Number of Ways to Wear Different Hats to Each Other](https://leetcode.com/problems/number-of-ways-to-wear-different-hats-to-each-other/)

# 7.22
1. [Leetcode : 922. Sort Array By Parity II](https://leetcode.com/problems/sort-array-by-parity-ii/)
2. [Leetcode : 1604. Alert Using Same Key-Card Three or More Times in a One Hour Period](https://leetcode.com/problems/alert-using-same-key-card-three-or-more-times-in-a-one-hour-period/)
3. [Leetcode : 1392. Longest Happy Prefix](https://leetcode.com/problems/longest-happy-prefix/)

# 7.16
1. [Leetcode : 584. Find Customer Referee](https://leetcode.com/problems/find-customer-referee/)
2. [Leetcode : 1319. Number of Operations to Make Network Connected](https://leetcode.com/problems/number-of-operations-to-make-network-connected/)
3. [Leetcode : 321. Create Maximum Number](https://leetcode.com/problems/create-maximum-number/)

# 7.8
1. [Leetcode : 584. Find Customer Referee](https://leetcode.com/problems/find-customer-referee/)
2. [Leetcode : 1997. First Day Where You Have Been in All the Rooms](https://leetcode.com/problems/first-day-where-you-have-been-in-all-the-rooms/)
3. [Leetcode : 460. LFU Cache](https://leetcode.com/problems/lfu-cache/)

# 7.1
1. [Leetcode : 1342. Number of Steps to Reduce a Number to Zero](https://leetcode.com/problems/number-of-steps-to-reduce-a-number-to-zero/)
2. [Leetcode : 1487. Making File Names Unique](https://leetcode.com/problems/making-file-names-unique/)
3. [Leetcode : 1345. Jump Game IV](https://leetcode.com/tag/breadth-first-search/)

# 6.24
1. [Leetcode : 543. Diameter of Binary Tree](https://leetcode.com/problems/diameter-of-binary-tree/)
2. [Leetcode : 1813. Sentence Similarity III](https://leetcode.com/problems/sentence-similarity-iii/)
3. [Leetcode : 1377. Frog Position After T Seconds](https://leetcode.com/problems/frog-position-after-t-seconds/)

# 6.17
1. [Leetcode : 459. Repeated Substring Pattern](https://leetcode.com/problems/repeated-substring-pattern/)
2. [Leetcode : 2017. Grid Game](https://leetcode.com/problems/grid-game/)
3. [Leetcode : 1330. Reverse Subarray To Maximize Array Value](https://leetcode.com/problems/reverse-subarray-to-maximize-array-value/)

# 6.10
1. [Leetcode : 258. Add Digits](https://leetcode.com/problems/add-digits/)
2. [Leetcode : 2017. Grid Game](https://leetcode.com/problems/grid-game/)
3. [Leetcode : 488. Zuma Game](https://leetcode.com/problems/zuma-game/)

# 6.3
1. [Leetcode : 1844. Replace All Digits with Characters](https://leetcode.com/problems/replace-all-digits-with-characters/)
2. [Leetcode : 622. Design Circular Queue](https://leetcode.com/problems/design-circular-queue/)
3. [Leetcode : 591. Tag Validator](https://leetcode.com/problems/tag-validator/)

# 5.28
1. [Leetcode : 1668. Maximum Repeating Substring](https://leetcode.com/problems/maximum-repeating-substring/)
2. [Leetcode : 1813. Sentence Similarity III](https://leetcode.com/problems/sentence-similarity-iii/)
3. [Leetcode : 472. Concatenated Words](https://leetcode.com/problems/concatenated-words/)

# 5.20
1. [Leetcode : 1332. Remove Palindromic Subsequences](https://leetcode.com/problems/remove-palindromic-subsequences/)
2. [Leetcode : 95. Unique Binary Search Trees II](https://leetcode.com/problems/unique-binary-search-trees-ii/)
3. [Leetcode : 1425. Constrained Subsequence Sum](https://leetcode.com/problems/constrained-subsequence-sum/)

# 5.12
1. [Leetcode : 1103. Distribute Candies to People](https://leetcode.com/problems/distribute-candies-to-people/)
2. [Leetcode : 207. Course Schedule](https://leetcode.com/problems/course-schedule/)
3. [Leetcode : 493. Reverse Pairs](https://leetcode.com/problems/reverse-pairs/)

# 5.6
1. [Leetcode : 1332. Remove Palindromic Subsequences](https://leetcode.com/problems/remove-palindromic-subsequences/)
2. [Leetcode : 1864. Minimum Number of Swaps to Make the Binary String Alternating](https://leetcode.com/problems/minimum-number-of-swaps-to-make-the-binary-string-alternating/)
3. [Leetcode : 1235. Maximum Profit in Job Scheduling](https://leetcode.com/problems/maximum-profit-in-job-scheduling/)

# 4.29
1. [Leetcode : 414. Third Maximum Number](https://leetcode.com/problems/third-maximum-number/)
2. [Leetcode : 621. Task Scheduler](https://leetcode.com/problems/task-scheduler/)
3. [Leetcode : 1483. Kth Ancestor of a Tree Node](https://leetcode.com/problems/kth-ancestor-of-a-tree-node/)

# 4.22
1. [Leetcode : 414. Third Maximum Number](https://leetcode.com/problems/third-maximum-number/)
2. [Leetcode : 1963. Minimum Number of Swaps to Make the String Balanced](https://leetcode.com/problems/minimum-number-of-swaps-to-make-the-string-balanced/)
3. [Leetcode : 1383. Maximum Performance of a Team](https://leetcode.com/problems/maximum-performance-of-a-team/)

# 4.15
1. [Leetcode : 118. Pascal's Triangle](https://leetcode.com/problems/pascals-triangle/)
2. [Leetcode : 2125. Number of Laser Beams in a Bank](https://leetcode.com/problems/number-of-laser-beams-in-a-bank/)
3. [Leetcode : 827. Making A Large Island](https://leetcode.com/problems/making-a-large-island/)

# 4.8
1. [Leetcode : 1114. Print in Order](https://leetcode.com/problems/print-in-order/)
2. [Leetcode : 1626. Best Team With No Conflicts](https://leetcode.com/problems/best-team-with-no-conflicts/)
3. [Leetcode : 1001. Grid Illumination](https://leetcode.com/problems/grid-illumination/)

# 4.1
1. [Leetcode : 1260. Shift 2D Grid](https://leetcode.com/problems/shift-2d-grid/)
2. [Leetcode : 2130. Maximum Twin Sum of a Linked List](https://leetcode.com/problems/maximum-twin-sum-of-a-linked-list/)
3. [Leetcode : 1001. Grid Illumination](https://leetcode.com/problems/grid-illumination/)

# 3.25
1. [Leetcode : 1984. Minimum Difference Between Highest and Lowest of K Scores](https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores/)
2. [Leetcode : 1019. Next Greater Node In Linked List](https://leetcode.com/problems/next-greater-node-in-linked-list/)
3. [Leetcode : 1643. Kth Smallest Instructions](https://leetcode.com/problems/kth-smallest-instructions/)

# 3.18
1. [Leetcode : 1667. Fix Names in a Table](https://leetcode.com/problems/fix-names-in-a-table/)
2. [Leetcode : 2201. Count Artifacts That Can Be Extracted](https://leetcode.com/problems/count-artifacts-that-can-be-extracted/)
3. [Leetcode : 273. Integer to English Words](https://leetcode.com/problems/integer-to-english-words/)

# 3.11
1. [Leetcode : 1984. Minimum Difference Between Highest and Lowest of K Scores](https://leetcode.com/problems/minimum-difference-between-highest-and-lowest-of-k-scores/)
2. [Leetcode : 304. Range Sum Query 2D - Immutable](https://leetcode.com/problems/range-sum-query-2d-immutable/)
3. [Leetcode : 1601. Maximum Number of Achievable Transfer Requests](https://leetcode.com/problems/maximum-number-of-achievable-transfer-requests/)

# 3.4
1. [Leetcode : 1886. Determine Whether Matrix Can Be Obtained By Rotation](https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/)
2. [Leetcode : 436. Find Right Interval](https://leetcode.com/problems/find-right-interval/)
3. [Leetcode : 818. Race Car](https://leetcode.com/problems/race-car/)

# 2.26
1. [Leetcode : 1886. Determine Whether Matrix Can Be Obtained By Rotation](https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/)
2. [Leetcode : 978. Longest Turbulent Subarray](https://leetcode.com/problems/longest-turbulent-subarray/)
3. [Leetcode : 1095. Find in Mountain Array](https://leetcode.com/problems/find-in-mountain-array/)

# 2.19
1. [Leetcode : 728. Self Dividing Numbers](https://leetcode.com/problems/self-dividing-numbers/)
2. [Leetcode : 1110. Delete Nodes And Return Forest](https://leetcode.com/problems/delete-nodes-and-return-forest/)
3. [Leetcode : 1889. Minimum Space Wasted From Packaging](https://leetcode.com/problems/minimum-space-wasted-from-packaging/)

# 2.13
1. [Leetcode : 1854. Maximum Population Year](https://leetcode.com/problems/maximum-population-year/)
2. [Leetcode : 978. Longest Turbulent Subarray](https://leetcode.com/problems/longest-turbulent-subarray/)
3. [Leetcode : 2025. Maximum Number of Ways to Partition an Array](https://leetcode.com/problems/maximum-number-of-ways-to-partition-an-array/)

# 2.5
1. [Leetcode : 350. Intersection of Two Arrays II](https://leetcode.com/problems/intersection-of-two-arrays-ii/)
2. [Leetcode : 1861. Rotating the Box](https://leetcode.com/problems/rotating-the-box/)
3. [Leetcode : 768. Max Chunks To Make Sorted II](https://leetcode.com/problems/max-chunks-to-make-sorted-ii/)

# 1.30
1. [Leetcode : 819. Most Common Word](https://leetcode.com/problems/most-common-word/)
2. [Leetcode : 49. Group Anagrams](https://leetcode.com/problems/group-anagrams/)
3. [Leetcode : 2076. Process Restricted Friend Requests](https://leetcode.com/problems/process-restricted-friend-requests/)

# 1.23
1. [Leetcode : Base 7](https://leetcode.com/problems/base-7/)
2. [Leetcode : Palindrome Partitioning](https://leetcode.com/problems/palindrome-partitioning/)
3. [Leetcode : Number of Flowers in Full Bloom](https://leetcode.com/problems/number-of-flowers-in-full-bloom/)

# 1.17
1. [Leetcode : Divisor Game](https://leetcode.com/problems/divisor-game/)
2. [Leetcode : Maximum Alternating Subsequence Sum](https://leetcode.com/problems/maximum-alternating-subsequence-sum/)
3. [Leetcode : The Skyline Problem](https://leetcode.com/problems/the-skyline-problem/)

# 1.8
1. [Leetcode : Determine Whether Matrix Can Be Obtained By Rotation](https://leetcode.com/problems/determine-whether-matrix-can-be-obtained-by-rotation/)
2. [Leetcode : Snapshot Array](https://leetcode.com/problems/snapshot-array/)
3. [Leetcode : Word Ladder](https://leetcode.com/problems/word-ladder/)

# 1.2
1. [Leetcode : Minimum Operations to Make the Array Increasing](https://leetcode.com/problems/minimum-operations-to-make-the-array-increasing/)
2. [Leetcode : Possible Bipartition](https://leetcode.com/problems/possible-bipartition/)
3. [Leetcode : Frog Position After T Seconds](https://leetcode.com/problems/frog-position-after-t-seconds/)

# 12.25
1. [Leetcode : Min Stack](https://leetcode.com/problems/min-stack/)
2. [Leetcode : Shifting Letters](https://leetcode.com/problems/shifting-letters/)
3. [Leetcode : Parse Lisp Expression](https://leetcode.com/problems/parse-lisp-expression/)

# 12.17
1. [Leetcode : Nim Game](https://leetcode.com/problems/nim-game/)
2. [Leetcode : Largest Merge Of Two Strings](https://leetcode.com/problems/largest-merge-of-two-strings/)
3. [Leetcode : Sequentially Ordinal Rank Tracker](https://leetcode.com/problems/sequentially-ordinal-rank-tracker/)

# 12.11
1. [Leetcode : Remove All Adjacent Duplicates In String](https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string/)
2. [Leetcode : Logical OR of Two Binary Grids Represented as Quad-Trees](https://leetcode.com/problems/logical-or-of-two-binary-grids-represented-as-quad-trees/)
3. [Leetcode : Minimum Cost to Cut a Stick](https://leetcode.com/problems/minimum-cost-to-cut-a-stick/)

# 12.3
1. [Leetcode : Check if the Sentence Is Pangram](https://leetcode.com/problems/check-if-the-sentence-is-pangram/)
2. [Leetcode : UTF-8 Validation](https://leetcode.com/problems/utf-8-validation/)
3. [Leetcode : Pizza With 3n Slices](https://leetcode.com/problems/pizza-with-3n-slices/)

# 11.26
1. [Leetcode : Shortest Completing Word](https://leetcode.com/problems/shortest-completing-word/)
2. [Leetcode : Minimum Absolute Sum Difference](https://leetcode.com/problems/minimum-absolute-sum-difference/)
3. [Leetcode : Poor Pigs](https://leetcode.com/problems/poor-pigs/)

# 11.19
1. [Leetcode : Intersection of Multiple Arrays](https://leetcode.com/problems/intersection-of-multiple-arrays/)
2. [Leetcode : Reordered Power of 2](https://leetcode.com/problems/reordered-power-of-2/)
3. [Leetcode : Number of Visible People in a Queue](https://leetcode.com/problems/number-of-visible-people-in-a-queue/)

# 11.12
1. [Leetcode : Redistribute Characters to Make All Strings Equal](https://leetcode.com/problems/redistribute-characters-to-make-all-strings-equal/)
2. [Leetcode : Random Flip Matrix](https://leetcode.com/problems/random-flip-matrix/)
3. [Leetcode : Special Binary String](https://leetcode.com/problems/special-binary-string/)

# 11.5
1. [Leetcode : Print in Order](https://leetcode.com/problems/print-in-order/)
2. [Leetcode : Rotated Digits](https://leetcode.com/problems/rotated-digits/)
3. [Leetcode : Find Median from Data Stream](https://leetcode.com/problems/find-median-from-data-stream/)

#10.29
1. [Leetcode : Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
2. [Leetcode : Detect Squares](https://leetcode.com/problems/detect-squares/)
3. [Leetcode : Smallest Range Covering Elements from K Lists](https://leetcode.com/problems/smallest-range-covering-elements-from-k-lists/)

# 10.22
1. [Leetcode : Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/)
2. [Leetcode : Dota2 Senate](https://leetcode.com/problems/dota2-senate/)
3. [Leetcode : Kth Smallest Instructions](https://leetcode.com/problems/kth-smallest-instructions/)

# 10.15
1. [Leetcode : Sign of the Product of an Array](https://leetcode.com/problems/sign-of-the-product-of-an-array/)
2. [Leetcode : Largest Divisible Subset](https://leetcode.com/problems/largest-divisible-subset/)
3. [Leetcode : Number of Digit One](https://leetcode.com/problems/number-of-digit-one/)

# 10.7
1. [Leetcode : Day of the Week](https://leetcode.com/problems/day-of-the-week/)
2. [Leetcode : Number of Ways to Select Buildings](https://leetcode.com/problems/number-of-ways-to-select-buildings/)
3. [Leetcode : Word Search II](https://leetcode.com/problems/word-search-ii/)

# 10.1
1. [Leetcode : Implement strStr()](https://leetcode.com/problems/find-the-index-of-the-first-occurrence-in-a-string/discuss/250479/28-implement-strstr-simple-java-solution-3ms-with-detailed-explanation)
2. [Leetcode : Reverse Linked List II](https://leetcode.com/problems/reverse-linked-list-ii/)
3. [Leetcode : Minimum Operations to Make the Array K-Increasing](https://leetcode.com/problems/minimum-operations-to-make-the-array-k-increasing/)

# 9.24
1. [Leetcode : Check if All Characters Have Equal Number of Occurrences](https://leetcode.com/problems/check-if-all-characters-have-equal-number-of-occurrences/)
2. [Leetcode : All Elements in Two Binary Search Trees](https://leetcode.com/problems/all-elements-in-two-binary-search-trees/)
3. [Leetcode : Allocate Mailboxes](https://leetcode.com/problems/allocate-mailboxes/)

# 9.14
1. [Leetcode : Valid Palindrome II](https://leetcode.com/problems/valid-palindrome-ii/)
2. [Leetcode : Break a Palindrome](https://leetcode.com/problems/break-a-palindrome/)
3. [Leetcode : LFU Cache](https://leetcode.com/problems/lfu-cache/)

# 9.3
1. [Leetcode : Divide Array Into Equal Pairs](https://leetcode.com/problems/divide-array-into-equal-pairs/)
2. [Leetcode : Minimized Maximum of Products Distributed to Any Store](https://leetcode.com/problems/minimized-maximum-of-products-distributed-to-any-store/)
3. [Leetcode : Minimum Number of Removals to Make Mountain Array](https://leetcode.com/problems/minimum-number-of-removals-to-make-mountain-array/)

# 8.20
1. [Leetcode : Check Whether Two Strings are Almost Equivalent](https://leetcode.com/problems/check-whether-two-strings-are-almost-equivalent/)
2. [Leetcode : Redundant Connection](https://leetcode.com/problems/redundant-connection/)
3. [Leetcode : Build Array Where You Can Find The Maximum Exactly K Comparisons](https://leetcode.com/problems/build-array-where-you-can-find-the-maximum-exactly-k-comparisons/)

# 8.13
1. [Leetcode : Add Binary](https://leetcode.com/problems/add-binary/)
2. [Leetcode : Queue Reconstruction by Height](https://leetcode.com/problems/queue-reconstruction-by-height/)
3. [Leetcode : Random Pick with Blacklist](https://leetcode.com/problems/random-pick-with-blacklist/)

# 8.6
1. [Leetcode : Destination City](https://leetcode.com/problems/destination-city/)
2. [Leetcode : Minimum Operations to Make Array Equal](https://leetcode.com/problems/minimum-operations-to-make-array-equal/)
3. [Leetcode : Kth Smallest Product of Two Sorted Arrays](https://leetcode.com/problems/kth-smallest-product-of-two-sorted-arrays/)

# 7.30
1. [Leetcode : Minimum Time to Type Word Using Special Typewriter](https://leetcode.com/problems/minimum-time-to-type-word-using-special-typewriter/)
2. [Leetcode : Stone Game II](https://leetcode.com/problems/stone-game-ii/)
3. [Leetcode : Shortest Path to Get All Keys](https://leetcode.com/problems/shortest-path-to-get-all-keys/)

# 7.23
1. [Leetcode : Article Views I](https://leetcode.com/problems/article-views-i/)
2. [Leetcode : Minimum Cost to Set Cooking Time](https://leetcode.com/problems/minimum-cost-to-set-cooking-time/)
3. [Leetcode : Maximum Profit in Job Scheduling](https://leetcode.com/problems/maximum-profit-in-job-scheduling/)

# 7.18
1. [Leetcode : Range Addition II](https://leetcode.com/problems/range-addition-ii/)
2. [Leetcode : Get Equal Substrings Within Budget](https://leetcode.com/problems/get-equal-substrings-within-budget/)
3. [Leetcode : Minimum One Bit Operations to Make Integers Zero](https://leetcode.com/problems/minimum-one-bit-operations-to-make-integers-zero/)

# 7.9
1. [Leetcode : Detect Capital](https://leetcode.com/problems/detect-capital/)
2. [Leetcode : Rabbits in Forest](https://leetcode.com/problems/rabbits-in-forest/)
3. [Leetcode : Count Unique Characters of All Substrings of a Given String](https://leetcode.com/problems/count-unique-characters-of-all-substrings-of-a-given-string/)

# 7.2
1. [Leetcode : Transpose Matrix](https://leetcode.com/problems/transpose-matrix/)
2. [Leetcode : Shopping Offers](https://leetcode.com/problems/shopping-offers/)
3. [Leetcode : Minimize Deviation in Array](https://leetcode.com/problems/minimize-deviation-in-array/)

# 6.25
1. [Leetcode : Check If a Word Occurs As a Prefix of Any Word in a Sentence](https://leetcode.com/problems/check-if-a-word-occurs-as-a-prefix-of-any-word-in-a-sentence/)
2. [Leetcode : Reverse Nodes in Even Length Groups](https://leetcode.com/problems/reverse-nodes-in-even-length-groups/)
3. [Leetcode : Number Of Ways To Reconstruct A Tree](https://leetcode.com/problems/number-of-ways-to-reconstruct-a-tree/)

# 6.18
1. [Leetcode : Roman to Integer](https://leetcode.com/problems/roman-to-integer/)
2. [Leetcode : Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
3. [Leetcode : Maximum Sum of 3 Non-Overlapping Subarrays](https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays/)

# 6.11
1. [Leetcode : Reformat Department Table](https://leetcode.com/problems/reformat-department-table/)
2. [Leetcode : Minimum Path Sum](https://leetcode.com/problems/minimum-path-sum/)
3. [Leetcode : Concatenated Words](https://leetcode.com/problems/concatenated-words/)

# 6.5
1. [Leetcode : Count Number of Pairs With Absolute Difference K](https://leetcode.com/problems/count-number-of-pairs-with-absolute-difference-k/)
2. [Leetcode : Rotate Array](https://leetcode.com/problems/rotate-array/)
3. [Leetcode : Find the Kth Smallest Sum of a Matrix With Sorted Rows](https://leetcode.com/problems/find-the-kth-smallest-sum-of-a-matrix-with-sorted-rows/)

# 5.28
1. [Leetcode : Minimum Value to Get Positive Step by Step Sum](https://leetcode.com/problems/minimum-value-to-get-positive-step-by-step-sum/)
2. [Leetcode : Maximum Length of Repeated Subarray](https://leetcode.com/problems/maximum-length-of-repeated-subarray/)
3. [Leetcode : Sum of Floored Pairs](https://leetcode.com/problems/sum-of-floored-pairs/)

# 5.21
1. [Leetcode : Binary Watch](https://leetcode.com/problems/binary-watch/)
2. [Leetcode : Additive Number](https://leetcode.com/problems/additive-number/)
3. [Leetcode : Max Value of Equation](https://leetcode.com/problems/max-value-of-equation/)

# 5.7
1. [Leetcode : Intersection of Two Arrays II](https://leetcode.com/problems/intersection-of-two-arrays-ii/)
2. [Leetcode : Number of Smooth Descent Periods of a Stock](https://leetcode.com/problems/number-of-smooth-descent-periods-of-a-stock/)
3. [Leetcode : Minimum White Tiles After Covering With Carpets](https://leetcode.com/problems/minimum-white-tiles-after-covering-with-carpets/)

# 4.30
1. [Leetcode : Thousand Separator](https://leetcode.com/problems/thousand-separator/)
2. [Leetcode : 4Sum II](https://leetcode.com/problems/4sum-ii/)
3. [Leetcode : Tiling a Rectangle with the Fewest Squares](https://leetcode.com/problems/tiling-a-rectangle-with-the-fewest-squares/)

# 4.23
1. [Leetcode : Sum of Root To Leaf Binary Numbers](https://leetcode.com/problems/sum-of-root-to-leaf-binary-numbers/)
2. [Leetcode : Binary Search Tree to Greater Sum Tree](https://leetcode.com/problems/binary-search-tree-to-greater-sum-tree/)
3. [Leetcode : Trips and Users](https://leetcode.com/problems/trips-and-users/)

# 4.9
1. [Leetcode : Keep Multiplying Found Values by Two](https://leetcode.com/problems/keep-multiplying-found-values-by-two/)
2. [Leetcode : Find a Peak Element II](https://leetcode.com/problems/find-a-peak-element-ii/)
3. [Leetcode : Minimum Incompatibility](https://leetcode.com/problems/minimum-incompatibility/)

# 4.2
1. [Leetcode : Valid Boomerang](https://leetcode.com/problems/valid-boomerang/)
2. [Leetcode : Distribute Coins in Binary Tree](https://leetcode.com/problems/distribute-coins-in-binary-tree/)
3. [Leetcode : Create Maximum Number](https://leetcode.com/problems/create-maximum-number/)

# 3.26
1. [Leetcode : Valid Palindrome](https://leetcode.com/problems/valid-palindrome/)
2. [Leetcode : Delete Leaves With a Given Value](https://leetcode.com/problems/delete-leaves-with-a-given-value/)
3. [Leetcode : Number of Valid Move Combinations On Chessboard](https://leetcode.com/problems/number-of-valid-move-combinations-on-chessboard/)

# 3.19
1. [Leetcode : Swap Salary](https://leetcode.com/problems/swap-salary/)
2. [Leetcode : Evaluate Reverse Polish Notation](https://leetcode.com/problems/evaluate-reverse-polish-notation/)
3. [Leetcode : Maximum Genetic Difference Query](https://leetcode.com/problems/maximum-genetic-difference-query/)

# 3.13
1. [Leetcode : Prime Arrangements](https://leetcode.com/problems/prime-arrangements/)
2. [Leetcode : Minimum Limit of Balls in a Bag](https://leetcode.com/problems/minimum-limit-of-balls-in-a-bag/)
3. [Leetcode : Perfect Rectangle](https://leetcode.com/problems/perfect-rectangle/)

# 2.19
1. [Leetcode : N-ary Tree Preorder Traversal](https://leetcode.com/problems/n-ary-tree-preorder-traversal/)
2. [Leetcode : Group Anagrams](https://leetcode.com/problems/group-anagrams/)
3. [Leetcode : Maximum Number of Events That Can Be Attended II](https://leetcode.com/problems/maximum-number-of-events-that-can-be-attended-ii/)

# 2.5
1. [Leetcode : Kids With the Greatest Number of Candies](https://leetcode.com/problems/kids-with-the-greatest-number-of-candies/)
2. [Leetcode : Find And Replace in String](https://leetcode.com/problems/find-and-replace-in-string/)
3. [Leetcode : Similar String Groups](https://leetcode.com/problems/similar-string-groups/)

# 1.29
1. [Leetcode : Duplicate Emails](https://leetcode.com/problems/duplicate-emails/)
2. [Leetcode : Cinema Seat Allocation](https://leetcode.com/problems/cinema-seat-allocation/)
3. [Leetcode : Minimum Cost to Hire K Workers](https://leetcode.com/problems/minimum-cost-to-hire-k-workers/)

# 1.21
1. [Leetcode : Number of Different Integers in a String](https://leetcode.com/problems/number-of-different-integers-in-a-string/)
2. [Leetcode : Total Hamming Distance](https://leetcode.com/problems/total-hamming-distance/)
3. [Leetcode : Minimum Difficulty of a Job](https://leetcode.com/problems/minimum-difficulty-of-a-job-schedule/)

# 1.15
1. [Leetcode : Power of Three](https://leetcode.com/problems/power-of-three/)
2. [Leetcode : Balance a Binary Search Tree](https://leetcode.com/problems/balance-a-binary-search-tree/)
3. [Leetcode : Maximum Running Time of N Computers](https://leetcode.com/problems/maximum-running-time-of-n-computers/)

# 1.2
1. [Leetcode : Excel Sheet Column Number](https://leetcode.com/problems/excel-sheet-column-number/)
2. [Leetcode : Flower Planting With No Adjacent](https://leetcode.com/problems/flower-planting-with-no-adjacent/)
3. [Leetcode : Maximum Gap](https://leetcode.com/problems/maximum-gap/)

# 12.26
1. [Leetcode : Number of Recent Calls](https://leetcode.com/problems/number-of-recent-calls/)
2. [Leetcode : Letter Case Permutation](https://leetcode.com/problems/letter-case-permutation/)
3. [Leetcode : Find in Mountain Array](https://leetcode.com/problems/find-in-mountain-array/)

# 12.19
1. [Leetcode : Find Words That Can Be Formed by Characters](https://leetcode.com/problems/find-words-that-can-be-formed-by-characters/)
2. [Leetcode : Course Schedule II](https://leetcode.com/problems/course-schedule-ii/)
3. [Leetcode : Building Boxes](https://leetcode.com/problems/building-boxes/)

# 12.11
1. [Leetcode : Find Pivot Index](https://leetcode.com/problems/find-pivot-index/)
2. [Leetcode : Maximum Trailing Zeros in a Cornered Path](https://leetcode.com/problems/maximum-trailing-zeros-in-a-cornered-path/)
3. [Leetcode : Best Time to Buy and Sell Stock III](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/)

# 12.4
1. [Leetcode : Student Attendance Record I](https://leetcode.com/problems/student-attendance-record-i/)
2. [Leetcode : Image Overlap](https://leetcode.com/problems/image-overlap/)
3. [Leetcode : Making A Large Island](https://leetcode.com/problems/making-a-large-island/)

# 11.27
1. [Leetcode : Count Good Triplets](https://leetcode.com/problems/count-good-triplets/)
2. [Leetcode : Can Convert String in K Moves](https://leetcode.com/problems/can-convert-string-in-k-moves/)
3. [Leetcode : Minimum Insertion Steps to Make a String Palindrome](https://leetcode.com/problems/minimum-insertion-steps-to-make-a-string-palindrome/)

# 11.20
* [Leetcode : Binary Tree Preorder Traversal](https://leetcode.com/problems/binary-tree-preorder-traversal/)
* [Leetcode : Solving Questions With Brainpower](https://leetcode.com/problems/solving-questions-with-brainpower/)
* [Leetcode : Maximum Equal Frequency](https://leetcode.com/problems/maximum-equal-frequency/)

# 11.14
* [Leetcode : Special Positions in a Binary Matrix](https://leetcode.com/problems/special-positions-in-a-binary-matrix/)
* [Leetcode : Maximum Level Sum of a Binary Tree](https://leetcode.com/problems/maximum-level-sum-of-a-binary-tree/)
* [Leetcode : Find Substring With Given Hash Value](https://leetcode.com/problems/find-substring-with-given-hash-value/)

# 11.6
* [Leetcode : Minimum Cost of Buying Candies With Discount](https://leetcode.com/problems/minimum-cost-of-buying-candies-with-discount/submissions/)
* [Leetcode : Minimum Cost Homecoming of a Robot in a Grid](https://leetcode.com/problems/minimum-cost-homecoming-of-a-robot-in-a-grid/)
* [Leetcode : Minimum Cost to Cut a Stick](https://leetcode.com/problems/minimum-cost-to-cut-a-stick/)

# 10.30
* [Leetcode : Root Equals Sum of Children](https://leetcode.com/problems/root-equals-sum-of-children/)
* [Leetcode : Flip String to Monotone Increasing](https://leetcode.com/problems/flip-string-to-monotone-increasing/)
* [Leetcode : Preimage Size of Factorial Zeroes Function](https://leetcode.com/problems/preimage-size-of-factorial-zeroes-function/)

# 10.23
* [Leetcode : Remove All Adjacent Duplicates In String](https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string/)
* [Leetcode : Shortest Subarray to be Removed to Make Array Sorted](https://leetcode.com/problems/shortest-subarray-to-be-removed-to-make-array-sorted/)
* [Leetcode : Process Restricted Friend Requests](https://leetcode.com/problems/process-restricted-friend-requests/)

# 10.16
* [Leetcode : Power of Two](https://leetcode.com/problems/power-of-two/)
* [Leetcode : Path Sum III](https://leetcode.com/problems/path-sum-iii/)
* [Leetcode : Minimum Number of Increments on Subarrays to Form a Target Array](https://leetcode.com/problems/minimum-number-of-increments-on-subarrays-to-form-a-target-array/)

# 10.10
* [Leetcode : Rings and Rods](https://leetcode.com/problems/rings-and-rods/)
* [Leetcode : All Divisions With the Highest Score of a Binary Array](https://leetcode.com/problems/all-divisions-with-the-highest-score-of-a-binary-array/)
* [Leetcode : Numbers With Repeated Digits](https://leetcode.com/problems/numbers-with-repeated-digits/)

# 10.2
* [Leetcode : Replace All ?'s to Avoid Consecutive Repeating Characters](https://leetcode.com/problems/replace-all-s-to-avoid-consecutive-repeating-characters/)
* [Leetcode : Minimum Swaps to Group All 1's Together II](https://leetcode.com/problems/minimum-swaps-to-group-all-1s-together-ii/)
* [Leetcode : Vertical Order Traversal of a Binary Tree](https://leetcode.com/problems/vertical-order-traversal-of-a-binary-tree/)

# 9.26
* [Leetcode : Reshape the Matrix](https://leetcode.com/problems/reshape-the-matrix/)
* [Leetcode : Non-decreasing Array](https://leetcode.com/problems/non-decreasing-array/)
* [Leetcode : Find a Value of a Mysterious Function Closest to Target](https://leetcode.com/problems/find-a-value-of-a-mysterious-function-closest-to-target/)

# 9.21
* [Leetcode : Ugly Number](https://leetcode.com/problems/ugly-number/)
* [Leetcode : Reveal Cards In Increasing Order](https://leetcode.com/problems/reveal-cards-in-increasing-order/)
* [Leetcode : Maximum Number of Darts Inside of a Circular Dartboard](https://leetcode.com/problems/maximum-number-of-darts-inside-of-a-circular-dartboard/)

# 9.4
* [Leetcode : Path Crossing](https://leetcode.com/problems/path-crossing/)
* [Leetcode : Minimize Hamming Distance After Swap Operations](https://leetcode.com/problems/minimize-hamming-distance-after-swap-operations/)
* [Leetcode : Reverse Subarray To Maximize Array Value](https://leetcode.com/problems/reverse-subarray-to-maximize-array-value/)

# 8.28
* [Leetcode : Sum of All Odd Length Subarrays](https://leetcode.com/problems/sum-of-all-odd-length-subarrays/)
* [Leetcode : Construct K Palindrome Strings](https://leetcode.com/problems/construct-k-palindrome-strings/)
* [Leetcode : Number of Ways to Rearrange Sticks With K Sticks Visible](https://leetcode.com/problems/number-of-ways-to-rearrange-sticks-with-k-sticks-visible/)

# 8.23
* [Leetcode : Find the Distance Value Between Two Arrays](https://leetcode.com/problems/find-the-distance-value-between-two-arrays/)
* [Leetcode : Binary Trees With Factors](https://leetcode.com/problems/binary-trees-with-factors/)
* [Leetcode : Reverse Pairs](https://leetcode.com/problems/reverse-pairs/)

# 8.14
* [Leetcode : Shuffle String](https://leetcode.com/problems/shuffle-string/)
* [Leetcode : Count Number of Homogenous Substrings](https://leetcode.com/problems/count-number-of-homogenous-substrings/)
* [Leetcode : Online Majority Element In Subarray](https://leetcode.com/problems/online-majority-element-in-subarray/)

# 8.8
* [Leetcode : Hamming Distance](https://leetcode.com/problems/hamming-distance/)
* [Leetcode : Open the Lock](https://leetcode.com/problems/open-the-lock/)
* [Leetcode : Find Longest Awesome Substring](https://leetcode.com/problems/find-longest-awesome-substring/)

# 8.1
* [Leetcode : Middle of the Linked List](https://leetcode.com/problems/middle-of-the-linked-list/)
* [Leetcode : Decode XORed Permutation](https://leetcode.com/problems/decode-xored-permutation/)
* [Leetcode : Tag Validator](https://leetcode.com/problems/tag-validator/)

# 7.26
* [Leetcode : Ransom Note](https://leetcode.com/problems/ransom-note/)
* [Leetcode : The Number of Weak Characters in the Game](https://leetcode.com/problems/the-number-of-weak-characters-in-the-game/)
* [Leetcode : Minimum Number of Taps to Open to Water a Garden](https://leetcode.com/problems/minimum-number-of-taps-to-open-to-water-a-garden/)

# 7.17
* [Leetcode : Special Array With X Elements Greater Than or Equal X](https://leetcode.com/problems/special-array-with-x-elements-greater-than-or-equal-x/)
* [Leetcode : Minimum Total Space Wasted With K Resizing Operations](https://leetcode.com/problems/minimum-total-space-wasted-with-k-resizing-operations/)
* [Leetcode : Maximum Frequency Stack](https://leetcode.com/problems/maximum-frequency-stack/)

# 7.11
* [Leetcode : Number of Valid Words in a Sentence](https://leetcode.com/problems/number-of-valid-words-in-a-sentence/)
* [Leetcode : Pancake Sorting](https://leetcode.com/problems/pancake-sorting/)
* [Leetcode : Parallel Courses III](https://leetcode.com/problems/parallel-courses-iii/)

# 7.4
* [Leetcode : How Many Numbers Are Smaller Than the Current Number](https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/)
* [Leetcode : Magic Squares In Grid](https://leetcode.com/problems/magic-squares-in-grid/)
* [Leetcode : Maximum Number of Visible Points](https://leetcode.com/problems/maximum-number-of-visible-points/)

# 6.27
* [Leetcode : Reformat The String](https://leetcode.com/problems/reformat-the-string/)
* [Leetcode : Number of Boomerangs](https://leetcode.com/problems/number-of-boomerangs/)
* [Leetcode : Count All Valid Pickup and Delivery Options](https://leetcode.com/problems/count-all-valid-pickup-and-delivery-options/)

# 6.21
* [Leetcode : Valid Palindrome II](https://leetcode.com/problems/valid-palindrome-ii/)
* [Leetcode : Copy List with Random Pointer](https://leetcode.com/problems/copy-list-with-random-pointer/)
* [Leetcode : Make the XOR of All Segments](https://leetcode.com/problems/make-the-xor-of-all-segments-equal-to-zero/)

# 6.13
* [Leetcode : Convert a Number to Hexadecimal](https://leetcode.com/problems/convert-a-number-to-hexadecimal/)
* [Leetcode : Check If Array Pairs Are Divisible by k](https://leetcode.com/problems/check-if-array-pairs-are-divisible-by-k/)
* [Leetcode : Kth Smallest Product of Two Sorted Arrays](https://leetcode.com/problems/kth-smallest-product-of-two-sorted-arrays/)

# 6.5
* [Leetcode : Move Zeroes](https://leetcode.com/problems/move-zeroes/)
* [Leetcode : Maximum Number of Occurrences of a Substring](https://leetcode.com/problems/maximum-number-of-occurrences-of-a-substring/)
* [Leetcode : Maximum Students Taking Exam](https://leetcode.com/problems/maximum-students-taking-exam/)

# 5.30
* [Leetcode : Minimum Changes To Make Alternating Binary String](https://leetcode.com/problems/minimum-changes-to-make-alternating-binary-string/)
* [Leetcode : Closest Divisors](https://leetcode.com/problems/closest-divisors/)
* [Leetcode : Minimum Space Wasted From Packaging](https://leetcode.com/problems/minimum-space-wasted-from-packaging/)

# 5.23
* [Leetcode : Positions of Large Groups](https://leetcode.com/problems/positions-of-large-groups/)
* [Leetcode : Top K Frequent Elements](https://leetcode.com/problems/top-k-frequent-elements/)
* [Leetcode : Reaching Points](https://leetcode.com/problems/reaching-points/)

# 5.16
* [Leetcode : Implement Stack using Queues](https://leetcode.com/problems/implement-stack-using-queues/)
* [Leetcode : Rotate List](https://leetcode.com/problems/rotate-list/)
* [Leetcode : Reverse Nodes in k-Group](https://leetcode.com/problems/reverse-nodes-in-k-group/)

# 5.10
* [Leetcode : Average of Levels in Binary Tree](https://leetcode.com/problems/average-of-levels-in-binary-tree/)
* [Leetcode : Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)
* [Leetcode : Wildcard Matching](https://leetcode.com/problems/wildcard-matching/)

# 5.3
* [Leetcode : Buddy Strings](https://leetcode.com/problems/buddy-strings/)
* [Leetcode : Search a 2D Matrix II](https://leetcode.com/problems/search-a-2d-matrix-ii/)
* [Leetcode : Arithmetic Slices II - Subsequence](https://leetcode.com/problems/arithmetic-slices-ii-subsequence/)

# 4.27
* [Leetcode : Search Insert Position](https://leetcode.com/problems/search-insert-position/)
* [Leetcode : Partition List](https://leetcode.com/problems/partition-list/)
* [Leetcode : K-th Smallest Prime Fraction](https://leetcode.com/problems/k-th-smallest-prime-fraction/)

# 4.18
* [Leetcode : Monotonic Array](https://leetcode.com/problems/monotonic-array/)
* [Leetcode : Perfect Squares](https://leetcode.com/problems/perfect-squares/)
* [Leetcode : Swim in Rising Water](https://leetcode.com/problems/swim-in-rising-water/)

# 4.12
* [Leetcode : Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros/)
* [Leetcode : Binary Search Tree Iterator](https://leetcode.com/problems/binary-search-tree-iterator/)
* [Leetcode : Student Attendance Record II](https://leetcode.com/problems/student-attendance-record-ii/)

# 4.6
* [Leetcode : Binary Search](https://leetcode.com/problems/binary-search/)
* [Leetcode : 3Sum With Multiplicity](https://leetcode.com/problems/3sum-with-multiplicity/)

# 3.28
* [Leetcode : Fizz Buzz](https://leetcode.com/problems/fizz-buzz/)
* [Leetcode : Integer Break](https://leetcode.com/problems/integer-break/)
* [Leetcode : Sliding Window Median](https://leetcode.com/problems/sliding-window-median/)

# 3.21
* [Leetcode : Same Tree](https://leetcode.com/problems/same-tree/)
* [Leetcode : Next Permutation](https://leetcode.com/problems/next-permutation/)
* [Leetcode : Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)

# 3.14
* [Leetcode : Climbing Stairs](https://leetcode.com/problems/climbing-stairs/)
* [Leetcode : Simplify Path](https://leetcode.com/problems/simplify-path/)
* [Leetcode : Dungeon Game](https://leetcode.com/problems/dungeon-game/)

# 3.7
* [Leetcode : Robot Return to Origin](https://leetcode.com/problems/robot-return-to-origin/)
* [Leetcode : Course Schedule](https://leetcode.com/problems/course-schedule/)
* [Leetcode : Basic Calculator](https://leetcode.com/problems/basic-calculator/)

# 2.27
* [Leetcode : Fair Candy Swap](https://leetcode.com/problems/fair-candy-swap/)
* [Leetcode : Minimum Genetic Mutation](https://leetcode.com/problems/minimum-genetic-mutation/)
* [Leetcode : Remove Boxes](https://leetcode.com/problems/remove-boxes/)

# 2.22
* [Leetcode : Longest Continuous Increasing Subsequence](https://leetcode.com/problems/longest-continuous-increasing-subsequence/)
* [Leetcode : Word Search](https://leetcode.com/problems/word-search/)
* [Leetcode : IPO](https://leetcode.com/problems/ipo/)

# 2.14
* [Leetcode : Is Subsequence](https://leetcode.com/problems/is-subsequence/)
* [Leetcode : Swap Nodes in Pairs](https://leetcode.com/problems/swap-nodes-in-pairs/)
* [Leetcode : Scramble String](https://leetcode.com/problems/scramble-string/)

# 2.7
* [Leetcode : Power of Four](https://leetcode.com/problems/power-of-four/)
* [Leetcode : Sort Colors](https://leetcode.com/problems/sort-colors/)
* [Leetcode : Word Ladder](https://leetcode.com/problems/word-ladder/)

# 1.31
* [Leetcode : Contains Duplicate](https://leetcode.com/problems/contains-duplicate/)
* [Leetcode : Combination Sum](https://leetcode.com/problems/combination-sum/)
* [Leetcode : Remove Invalid Parentheses](https://leetcode.com/problems/remove-invalid-parentheses/)

# 1.23
* [Leetcode : Binary Tree Inorder Traversal](https://leetcode.com/problems/binary-tree-inorder-traversal/)
* [Leetcode : Group Anagrams](https://leetcode.com/problems/group-anagrams/)
* [Leetcode : Edit Distance](https://leetcode.com/problems/edit-distance/)

# 1.17
* [Leetcode : Roman to Integer](https://leetcode.com/problems/roman-to-integer/)
* [Leetcode : 3Sum Closest](https://leetcode.com/problems/3sum-closest/)
* [Leetcode : N-Queens II](https://leetcode.com/problems/n-queens-ii/)

# 1.10
* [Leetcode : Word Pattern](https://leetcode.com/problems/word-pattern/)
* [Leetcode : Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring/)
* [Leetcode : Longest Valid Parentheses](https://leetcode.com/problems/longest-valid-parentheses/)

# 1.3
* [Leetcode : Set Mismatch](https://leetcode.com/problems/set-mismatch/)
* [Leetcode : Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)
* [Leetcode : Candy](https://leetcode.com/problems/candy/)

# 12.29
* [Leetcode : Maximum Product of Three Numbers](https://leetcode.com/problems/maximum-product-of-three-numbers/)
* [Leetcode : Find K Pairs with Smallest Sums](https://leetcode.com/problems/find-k-pairs-with-smallest-sums/)

# 12.20
- Leetcode : Pascal's Triangle II
- Leetcode : Container With Most Water
- Leetcode : First Missing Positive

# 12.9
* [Leetcode : Palindrome Linked List](https://leetcode.com/problems/palindrome-linked-list/)
* [Leetcode : Binary Tree Zigzag Level Order Traversal](https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/)
* [Leetcode : Fancy Sequence](https://leetcode.com/problems/fancy-sequence/)

# 11.29
* [Leetcode : Find Common Characters](https://leetcode.com/problems/find-common-characters/)
* [Leetcode : Accounts Merge](https://leetcode.com/problems/accounts-merge/)
* [Leetcode : Sliding Window Maximum](https://leetcode.com/problems/sliding-window-maximum/)

# 11.22
* [Leetcode : Max Consecutive Ones](https://leetcode.com/problems/max-consecutive-ones/)
* [Leetcode : Repeated DNA Sequences](https://leetcode.com/problems/repeated-dna-sequences/)

# 11.16
* [Leetcode : Count Binary Substrings](https://leetcode.com/problems/count-binary-substrings/)
* [Leetcode : Serialize and Deserialize BST](https://leetcode.com/problems/serialize-and-deserialize-bst/)

# 11.10
* [Leetcode : Assign Cookies](https://leetcode.com/problems/assign-cookies/)
* [Leetcode : House Robber III](https://leetcode.com/problems/house-robber-iii/)

# 11.1
* [Leetcode : Next Greater Element I](https://leetcode.com/problems/next-greater-element-i/)
* [Leetcode : Majority Element II](https://leetcode.com/problems/majority-element-ii/)
* [Leetcode : Best Time to Buy and Sell Stock IV](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iv/)

# 10.26
* [Leetcode : Number of 1 Bits](https://leetcode.com/problems/number-of-1-bits/)
* [Leetcode : Spiral Matrix II](https://leetcode.com/problems/spiral-matrix-ii/)

# 10.18
* [Leetcode : Isomorphic Strings](https://leetcode.com/problems/isomorphic-strings/)
* [Leetcode : 4Sum](https://leetcode.com/problems/4sum/)
* [Leetcode : N-Queens](https://leetcode.com/problems/n-queens/)

# 10.12
* [Leetcode : Happy Number](https://leetcode.com/problems/happy-number/)
* [Leetcode : Unique Paths II](https://leetcode.com/problems/unique-paths-ii/)
* [Leetcode : Trapping Rain Water](https://leetcode.com/problems/trapping-rain-water/)

# 10.4
* [Leetcode : Pascal's Triangle](https://leetcode.com/problems/pascals-triangle/)
* [Leetcode : Unique Binary Search Trees](https://leetcode.com/problems/unique-binary-search-trees/)
* [Leetcode : Expression Add Operators](https://leetcode.com/problems/expression-add-operators/)

# 9.27
* [Leetcode : Same Tree](https://leetcode.com/problems/same-tree/)
* [Leetcode : Jump Game II](https://leetcode.com/problems/jump-game-ii/)
* [Leetcode : Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree/)

# 9.14
* [Leetcode : Verifying an Alien Dictionary](https://leetcode.com/problems/verifying-an-alien-dictionary/)
* [Leetcode : Minimum Height Trees](https://leetcode.com/problems/minimum-height-trees/)
* [Leetcode : Find Median from Data Stream](https://leetcode.com/problems/find-median-from-data-stream/)

# 9.7
* [Leetcode : Min Cost Climbing Stairs](https://leetcode.com/problems/min-cost-climbing-stairs/)
* [Leetcode : Rotate Function](https://leetcode.com/problems/rotate-function/)
* [Leetcode : Best Time to Buy and Sell Stock III](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/)

# 8.30
* [Leetcode : Reverse Bits](https://leetcode.com/problems/reverse-bits/)
* [Leetcode : Subsets](https://leetcode.com/problems/subsets/)
* [Leetcode : Maximum Gap](https://leetcode.com/problems/maximum-gap/)

# 8.24
* [Leetcode : Linked List Cycle](https://leetcode.com/problems/linked-list-cycle/)
* [Leetcode : Interleaving String](https://leetcode.com/problems/interleaving-string/)
* [Leetcode : Reverse Nodes in k-Group](https://leetcode.com/problems/reverse-nodes-in-k-group/)

# 8.16
* [Leetcode : Design HashMap](https://leetcode.com/problems/design-hashmap/)
* [Leetcode : Range Sum Query - Mutable](https://leetcode.com/problems/range-sum-query-mutable/)
* [Leetcode : Sudoku Solver](https://leetcode.com/problems/sudoku-solver/)

# 8.9
* [Leetcode : Arranging Coins](https://leetcode.com/problems/arranging-coins/)
* [Leetcode : Find Peak Element](https://leetcode.com/problems/find-peak-element/)
* [Leetcode : Data Stream as Disjoint Intervals](https://leetcode.com/problems/data-stream-as-disjoint-intervals/)

# 8.2
* [Leetcode : Longest Palindrome](https://leetcode.com/problems/longest-palindrome/)
* [Leetcode : Different Ways to Add Parentheses](https://leetcode.com/problems/different-ways-to-add-parentheses/)

# 7.26
* [Leetcode : Valid Perfect Square](https://leetcode.com/problems/valid-perfect-square/)
* [Leetcode : Spiral Matrix](https://leetcode.com/problems/spiral-matrix/)

# 7.20
* [Leetcode : Ransom Note](https://leetcode.com/problems/ransom-note/)
* [Leetcode : Word Break](https://leetcode.com/problems/word-break/)

# 7.12
* [Leetcode : Reverse String](https://leetcode.com/problems/reverse-string/)
* [Leetcode : Partition List](https://leetcode.com/problems/partition-list/)

# 7.6
* [Leetcode : Power of Three](https://leetcode.com/problems/power-of-three/)
* [Leetcode : Unique Paths](https://leetcode.com/problems/unique-paths/)

# 6.28
* [Leetcode : Min Stack](https://leetcode.com/problems/min-stack/)
* [Leetcode : Multiply Strings](https://leetcode.com/problems/multiply-strings/)
* [Leetcode : Regular Expression Matching](https://leetcode.com/problems/regular-expression-matching/)

# 6.22
* [Leetcode : Valid Parentheses](https://leetcode.com/problems/valid-parentheses/)
* [Leetcode : Valid Sudoku](https://leetcode.com/problems/valid-sudoku/)

# 6.15
* [Leetcode : Excel Sheet Column Title](https://leetcode.com/problems/excel-sheet-column-title/)
* [Leetcode : Non-decreasing Array](https://leetcode.com/problems/non-decreasing-array/)

# 6.8
* [Leetcode : Lowest Common Ancestor of a Binary Search Tree](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/)
* [Leetcode : LRU Cache](https://leetcode.com/problems/lru-cache/)

# 6.1
* [Leetcode : Majority Element](https://leetcode.com/problems/majority-element/)
* [Leetcode : Gas Station](https://leetcode.com/problems/gas-station/)

# 5.25
* [Leetcode : How Many Numbers Are Smaller Than the Current Number](https://leetcode.com/problems/how-many-numbers-are-smaller-than-the-current-number/)
* [Leetcode : Design Twitter](https://leetcode.com/problems/design-twitter/)

# 5.18
* [Leetcode : Unique Number of Occurrences](https://leetcode.com/problems/unique-number-of-occurrences/)
* [Leetcode : Task Scheduler](https://leetcode.com/problems/task-scheduler/)

# 5.11
* [Leetcode : Find the Town Judge](https://leetcode.com/problems/find-the-town-judge/)
* [Leetcode : Restore IP Addresses](https://leetcode.com/problems/restore-ip-addresses/)

# 5.4
* [Leetcode : Merge Two Binary Trees](https://leetcode.com/problems/merge-two-binary-trees/)
* [Leetcode : Rotate Image](https://leetcode.com/problems/rotate-image/)
* [Leetcode : Number of Ways to Reorder Array to Get Same BST](https://leetcode.com/problems/number-of-ways-to-reorder-array-to-get-same-bst/)

# 4.27
* [Leetcode : Search in a Binary Search Tree](https://leetcode.com/problems/search-in-a-binary-search-tree/)
* [Leetcode : Open the Lock](https://leetcode.com/problems/open-the-lock/)
* [Leetcode : Number of Submatrices That Sum to Target](https://leetcode.com/problems/number-of-submatrices-that-sum-to-target/)

# 4.19
* [Leetcode : Binary Number with Alternating Bits](https://leetcode.com/problems/binary-number-with-alternating-bits/)
* [Leetcode : Push Dominoes](https://leetcode.com/problems/push-dominoes/)
* [Leetcode : 24 Game](https://leetcode.com/problems/24-game/)

# 4.12
* [Leetcode : Symmetric Tree](https://leetcode.com/problems/symmetric-tree/)
* [Leetcode : Jump Game](https://leetcode.com/problems/jump-game/)
* [Leetcode : Word Break II](https://leetcode.com/problems/word-break-ii/)

# 4.5
* [Leetcode : Move Zeroes](https://leetcode.com/problems/move-zeroes/)
* [Leetcode : Search a 2D Matrix](https://leetcode.com/problems/search-a-2d-matrix/)
* [Leetcode : The Skyline Problem](https://leetcode.com/problems/the-skyline-problem/)

# 3.29
* [Leetcode : Letter Combinations of a Phone Number](https://leetcode.com/problems/letter-combinations-of-a-phone-number/)
* [Leetcode : Merge k Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)

# 3.22
* [Leetcode : Positions of large groups](https://leetcode.com/problems/positions-of-large-groups/)
* [Leetcode : kth smallest element in a sorted matrix](https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix/)
* [Leetcode : Find k closest elements](https://leetcode.com/problems/find-k-closest-elements/)

# 3.16
* [Leetcode : Number of provinces](https://leetcode.com/problems/number-of-provinces/)
* [Leetcode : Couples holding hands](https://leetcode.com/problems/couples-holding-hands/)

# 3.8
* [Leetcode : Minimum size subarray sum](https://leetcode.com/problems/minimum-size-subarray-sum/)
* [Leetcode : Permutation in string](https://leetcode.com/problems/permutation-in-string/)
* [Leetcode : Sliding window median](https://leetcode.com/problems/sliding-window-median/)

# 3.1
* [Leetcode : Maximum subarray](https://leetcode.com/problems/maximum-subarray/)
* [Leetcode : Length of longest fibonacci subsequence](https://leetcode.com/problems/length-of-longest-fibonacci-subsequence/)
* [Leetcode : Wildcard matching](https://leetcode.com/problems/wildcard-matching/)

# 2.21
* [Leetcode : Minimum depth of binary tree](https://leetcode.com/problems/minimum-depth-of-binary-tree/)
* [Leetcode : Rotting oranges](https://leetcode.com/problems/rotting-oranges/)
* [Leetcode : Bus routes](https://leetcode.com/problems/bus-routes/)

# 2.7
* [Leetcode : Remove all adjacent duplicates in string](https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string/)
* [Leetcode : Minimum add to make parentheses valid](https://leetcode.com/problems/minimum-add-to-make-parentheses-valid/)
* [Leetcode : Minimum adjacent swaps for k consecutive ones](https://leetcode.com/problems/minimum-adjacent-swaps-for-k-consecutive-ones/)

# 1.25
* [Leetcode : Min cost climbing stairs](https://leetcode.com/problems/min-cost-climbing-stairs/)
* [Leetcode : Greatest sum divisible by three](https://leetcode.com/problems/greatest-sum-divisible-by-three/)
* [Leetcode : Stone game III](https://leetcode.com/problems/stone-game-iii/)

# 1.10
* [Leetcode : Remove duplicates from sorted list](https://leetcode.com/problems/remove-duplicates-from-sorted-list/)
* [Leetcode : Remove duplicates from sorted list II](https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/)
* [Leetcode : Odd even linked list](https://leetcode.com/problems/odd-even-linked-list/)
* [Leetcode : Remove zero sum consecutive nodes from linked list](https://leetcode.com/problems/remove-zero-sum-consecutive-nodes-from-linked-list/)

# 12.27
* [Leetcode : Last stone weight](https://leetcode.com/problems/last-stone-weight/)
* [Leetcode : Distant barcodes](https://leetcode.com/problems/distant-barcodes/)
* [Leetcode : Furthest building you can reach](https://leetcode.com/problems/furthest-building-you-can-reach/)
* [Leetcode : Find kth smallest pair distance](https://leetcode.com/problems/find-k-th-smallest-pair-distance/)

# 12.13
* [Leetcode : Maximum depth of n ary tree](https://leetcode.com/problems/maximum-depth-of-n-ary-tree/)
* [Leetcode : Shortest path in binary matrix](https://leetcode.com/problems/shortest-path-in-binary-matrix/)
* [Leetcode : Shortest path in a grid with obstacles elimination](https://leetcode.com/problems/shortest-path-in-a-grid-with-obstacles-elimination/)

# 11.29
* [Leetcode : Search Insert Position](https://leetcode.com/problems/search-insert-position/)
* [Leetcode : Find Minimum in Rotated Sorted Array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)
* [Leetcode : Capacity to Ship Packages Within D-Days](https://leetcode.com/problems/capacity-to-ship-packages-within-d-days/)
* [Leetcode : Maximum Profit in Job Scheduling](https://leetcode.com/problems/maximum-profit-in-job-scheduling/)

# 11.15
* [Leetcode : Flipping an image](https://leetcode.com/problems/flipping-an-image/)
* [Leetcode : Longest Subarray of 1s after deleting one element](https://leetcode.com/problems/longest-subarray-of-1s-after-deleting-one-element/)
* [Leetcode : Max value of equation](https://leetcode.com/problems/max-value-of-equation/)

# 11.01
* [Leetcode : Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
* [Leetcode : Find Two Non-overlapping Subarrays Each With Target Sum](https://leetcode.com/problems/find-two-non-overlapping-sub-arrays-each-with-target-sum/)
* [Leetcode : Maximum Profit In Job Scheduling](https://leetcode.com/problems/maximum-profit-in-job-scheduling/)

## 10.12
* [Leetcode : Plus One Linked List](https://leetcode.com/problems/plus-one-linked-list/)
* [Leetcode : Search a 2D Matrix II](https://leetcode.com/problems/search-a-2d-matrix-ii/)
* [Leetcode : Recover Binary Search Tree](https://leetcode.com/problems/recover-binary-search-tree/)
* [Leetcode : Online Majority Element In Subarray](https://leetcode.com/problems/online-majority-element-in-subarray/)
* [Leetcode : Student Attendance Record II](https://leetcode.com/problems/student-attendance-record-ii/)

## 09.27
* [Leetcode : Find All Numbers Disappeared in an Array](https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array/)
* [Leetcode : Find All Duplicates in an Array](https://leetcode.com/problems/find-all-duplicates-in-an-array/)
* [Leetcode : Find Missing Positive](https://leetcode.com/problems/first-missing-positive/)
* [Leetcode : All Paths from Source Lead to Destination](https://leetcode.com/problems/all-paths-from-source-lead-to-destination/)
* [Leetcode : Binary Tree Cameras](https://leetcode.com/problems/binary-tree-cameras/)

## 09.05
* [Leetcode : Min Stack](https://leetcode.com/problems/min-stack/)
* [Leetcode : Flatten Nested List Iterator](https://leetcode.com/problems/flatten-nested-list-iterator/)
* [Leetcode : Sliding Window Maximum](https://leetcode.com/problems/sliding-window-maximum/)
* [Leetcode : Sum of Distances in Tree](https://leetcode.com/problems/sum-of-distances-in-tree/)
* [Leetcode : Reachable Nodes In Subdivided Graph](https://leetcode.com/problems/reachable-nodes-in-subdivided-graph/)

## 08.29 - [해답](https://velog.io/@cheol/series/meetcode-2020-08-29)
* [Leetcode : Cat and Mouse](https://leetcode.com/problems/cat-and-mouse/)
* [Leetcode : Number of Music Playlists](https://leetcode.com/problems/number-of-music-playlists/)

## 08.23 - [해답](https://velog.io/@cheol/series/meetcode-2020-08-22)
* [Leetcode : Merge Two Sorted Lists](https://leetcode.com/problems/merge-two-sorted-lists/)
* [Leetcode : Sort List](https://leetcode.com/problems/sort-list/)
* [Leetcode : Merge k Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)
* [Leetcode : Exam Room](https://leetcode.com/problems/exam-room/)
* [Leetcode : Perfect Rectangle](https://leetcode.com/problems/perfect-rectangle/)

## 08.16 - [해답](https://velog.io/@cheol/series/meetcode-2020-08-15)
* [Leetcode : Next Greater Element I](https://leetcode.com/problems/next-greater-element-i/)
* [Leetcode : Combination Sum II](https://leetcode.com/problems/combination-sum-ii/)
* [Leetcode : Circular Array Loop](https://leetcode.com/problems/circular-array-loop/)
* [Leetcode : Erect the Fence](https://leetcode.com/problems/erect-the-fence/)

## 08.09
* [Leetcode : Merge Sorted Array](https://leetcode.com/problems/merge-sorted-array/)
* [Leetcode : Top K Frequent Words](https://leetcode.com/problems/top-k-frequent-words/)
* [Leetcode : Different Ways to Add Parentheses](https://leetcode.com/problems/different-ways-to-add-parentheses/)
* [Leetcode : Count of Smaller Numbers After Self](https://leetcode.com/problems/count-of-smaller-numbers-after-self/)

## 08.04 - [해답](https://velog.io/@cheol/series/meetcode-2020-08-02)
* [Leetcode : Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
* [Leetcode : Longest Happy String](https://leetcode.com/problems/longest-happy-string/)
* [Leetcode : Count Number of Teams](https://leetcode.com/problems/count-number-of-teams/)
* [Leetcode : Super Egg Drop](https://leetcode.com/problems/super-egg-drop/)

## 07.26
* [Leetcode : Valid Palindrome II](https://leetcode.com/problems/valid-palindrome-ii/)
* [Leetcode : Minimum Remove to Make Valid Parentheses](https://leetcode.com/problems/minimum-remove-to-make-valid-parentheses/)
* [Leetcode : Seriralize and Deserialize BST](https://leetcode.com/problems/serialize-and-deserialize-bst/)
* [Leetcode : Perfect Rectangle](https://leetcode.com/problems/perfect-rectangle/)

## 07.19 - [해답](https://velog.io/@cheol/series/meetcode-2020-07-18)
* [Leetcode : Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)
* [Leetcode : Generate Parentheses](https://leetcode.com/problems/generate-parentheses/)
* [Leetcode : Count Servers that Communicate](https://leetcode.com/problems/count-servers-that-communicate/)
* [Leetcode : Basic Calculator](https://leetcode.com/problems/basic-calculator/)

## 07.12 - [해답](https://velog.io/@cheol/series/meetcode-2020-07-11)
* [Leetcode : Number of Good Pairs](https://leetcode.com/problems/number-of-good-pairs/)
* [Leetcode : Number of Islands](https://leetcode.com/problems/number-of-islands/)
* [Leetcode : Uncrossed Lines](https://leetcode.com/problems/uncrossed-lines/)
* [Leetcode : Number of Subarrays with Bounded Maximum](https://leetcode.com/problems/number-of-subarrays-with-bounded-maximum/)

## 07.05 - [해답](https://velog.io/@cheol/series/meetcode-2020-07-04)
* [Leetcode : Super Ugly Number](https://leetcode.com/problems/super-ugly-number/)
* [Leetcode : Minimum Number of Arrows to Burst Balloons](https://leetcode.com/problems/minimum-number-of-arrows-to-burst-balloons/)
* [Leetcode : Possible Bipartition](https://leetcode.com/problems/possible-bipartition/)

## 06.29
* [Leetcode : House Robber II](https://leetcode.com/problems/house-robber-ii/)
* [Leetcode : Pancake Sorting](https://leetcode.com/problems/pancake-sorting/)
* [Leetcode : Elimination Game](https://leetcode.com/problems/elimination-game/)

## 06.21
* [Leetcode : Final Prices With a Special Discount in a Shop](https://leetcode.com/problems/final-prices-with-a-special-discount-in-a-shop/)
* [Leetcode : Stone Game II](https://leetcode.com/problems/stone-game-ii/)
* [Leetcode : Minimum Number of Days to Make m Bouquets](https://leetcode.com/problems/minimum-number-of-days-to-make-m-bouquets/)

## 06.13
* [Leetcode : Word Subsets](https://leetcode.com/problems/word-subsets/)
* [Leetcode : Shortest Path with Alternating Colors](https://leetcode.com/problems/shortest-path-with-alternating-colors/)
* [Leetcode : Time Needed to Inform All Employees](https://leetcode.com/problems/time-needed-to-inform-all-employees/)

## 06.06
* [프로그래머스 : 후보키](https://programmers.co.kr/learn/courses/30/lessons/42890)
* [Leetcode : Lowest common ancestor of a binary search tree](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/)
* [Leetcode : Friend circles](https://leetcode.com/problems/friend-circles/)

## 05.31
* [Leetcode : Range sum query immutalbe](https://leetcode.com/problems/range-sum-query-immutable/)
* [Leetcode : Maximum length of repeated subarray](https://leetcode.com/problems/maximum-length-of-repeated-subarray/)

## 05.24
* [프로그래머스 : 보행자 천국](https://programmers.co.kr/learn/courses/30/lessons/1832)
* [Leetcode : Cousins in binary tree](https://leetcode.com/problems/cousins-in-binary-tree/)
* [Leetcode : Number of islands](https://leetcode.com/problems/number-of-islands/)

## 05.18
* [프로그래머스 : 여행경로](https://programmers.co.kr/learn/courses/30/lessons/43164)
* [Leetcode : Path sum](https://leetcode.com/problems/path-sum/)
* [Leetcode : Path sum II](https://leetcode.com/problems/path-sum-ii/)

## 05.10
* [프로그래머스 : 괄호 변환](https://programmers.co.kr/learn/courses/30/lessons/60058)
* [Leetcode : Remove outermost parentheses](https://leetcode.com/problems/remove-outermost-parentheses/)
* [Leetcode : Reverse substrings between each pair of parentheses](https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/)

## 05.03
* [프로그래머스 : 디스크 컨트롤러](https://programmers.co.kr/learn/courses/30/lessons/42627)
* [Leetcode : Kth largest element in an array](https://leetcode.com/problems/kth-largest-element-in-an-array/)
* [Leetcode : Kth smallest prime fraction](https://leetcode.com/problems/k-th-smallest-prime-fraction/)

## 04.25
* [프로그래머스 : 구명보트](https://programmers.co.kr/learn/courses/30/lessons/42885)
* [Leetcode : Last stone weight](https://leetcode.com/problems/last-stone-weight/)
* [Leetcode : Subarray sums divisible by k](https://leetcode.com/problems/subarray-sums-divisible-by-k/)

## 04.18
* [Leetcode : Lemonade change](https://leetcode.com/problems/lemonade-change/)
* [Leetcode : Surrounded regions](https://leetcode.com/problems/surrounded-regions/)
* [Leetcode : Next greater element II](https://leetcode.com/problems/next-greater-element-ii/)

## 04.10
* [프로그래머스 : 주식가격](https://programmers.co.kr/learn/courses/30/lessons/42584)
* [Leetcode : Backspace string compare](https://leetcode.com/problems/backspace-string-compare/)
* [Leetcode : 132 Pattern](https://leetcode.com/problems/132-pattern/description/)

## 04.04
* [프로그래머스 : 크레인 인형 뽑기 게임](https://programmers.co.kr/learn/courses/30/lessons/64061)
* [Leetcode : Container with most water](https://leetcode.com/problems/container-with-most-water/)
* [Leetcode : Largest rectangle in histogram](https://leetcode.com/problems/largest-rectangle-in-histogram/)

## 03.28
* [프로그래머스 : 무지의 먹방 라이브](https://programmers.co.kr/learn/courses/30/lessons/42891)
* [Leetcode : Two sum II](https://leetcode.com/problems/two-sum-ii-input-array-is-sorted/)
* [Leetcode : Split array largest sum](https://leetcode.com/problems/split-array-largest-sum/)

## 03.20
* [프로그래머스 : 징검다리](https://programmers.co.kr/learn/courses/30/lessons/43236)
* [Leetcode : Find smallest letter greater than target](https://leetcode.com/problems/find-smallest-letter-greater-than-target/)
* [Leetcode : Count of smaller numbers after self](https://leetcode.com/problems/count-of-smaller-numbers-after-self/) ([설명](https://youtu.be/AAVOr10A018)<img src="/icon.png" width="20" height="20" />)

## 03.14
* [프로그래머스 : 예산](https://programmers.co.kr/learn/courses/30/lessons/43237)
* [Leetcode : Search insert position](https://leetcode.com/problems/search-insert-position/)
* [Leetcode : Search in rotated sorted array](https://leetcode.com/problems/search-in-rotated-sorted-array/)

## 03.06
* [프로그래머스 : 정수삼각형](https://programmers.co.kr/learn/courses/30/lessons/43105)
* [Leetcode : Distance between bus stops](https://leetcode.com/problems/distance-between-bus-stops/)
* [Leetcode : Minimum Number of Refueling Stops](https://leetcode.com/problems/minimum-number-of-refueling-stops/)

## 02.28
* [프로그래머스 : 카카오프렌즈 컬러링북](https://programmers.co.kr/learn/courses/30/lessons/1829)
* [Leetcode : Flood fill](https://leetcode.com/problems/flood-fill/)
* [Leetcode : Minimize malware spread II](https://leetcode.com/problems/minimize-malware-spread-ii/)

## 02.21
* [프로그래머스 : 단어퍼즐](https://programmers.co.kr/learn/courses/30/lessons/12983)
* [Leetcode : Find words that can be formed by characters](https://leetcode.com/problems/find-words-that-can-be-formed-by-characters/)
* [Leetcode : Longest String Chain](https://leetcode.com/problems/longest-string-chain/)

## 02.14
* [프로그래머스 : 줄서는 방법](https://programmers.co.kr/learn/courses/30/lessons/12936)
* [Leetcode : Is subsequence](https://leetcode.com/problems/is-subsequence/)
* [Leetcode : Longest common subsequence](https://leetcode.com/problems/longest-common-subsequence/)

## 02.07
* [프로그래머스 : 도둑질](https://programmers.co.kr/learn/courses/30/lessons/42897)
* [Leetcode : House robber](https://leetcode.com/problems/house-robber/)
* [Leetcode : House robber ii](https://leetcode.com/problems/house-robber-ii/)

## 02.01
* [프로그래머스 : 멀리뛰기](https://programmers.co.kr/learn/challenges)
* [Leetcode : Climbing stairs](https://leetcode.com/problems/climbing-stairs/)
* [Leetcode : Min cost climbing stairs](https://leetcode.com/problems/min-cost-climbing-stairs/)

## 01.18
* [프로그래머스 : 최고의 집합](https://programmers.co.kr/learn/courses/30/lessons/12938)
* [Leetcode : Reverse linked list](https://leetcode.com/problems/reverse-linked-list/)
* [Leetcode : Reorder list](https://leetcode.com/problems/reorder-list/)
* [Leetcode : Merge k sorted lists](https://leetcode.com/problems/merge-k-sorted-lists)

## 01.11
* [프로그래머스 : 문자열 압축](https://programmers.co.kr/learn/courses/30/lessons/60057)
* [Leetcode : Rotate Array](https://leetcode.com/problems/rotate-array/)
* [Leetcode : Find minimum in rotated sorted array](https://leetcode.com/problems/find-minimum-in-rotated-sorted-array/)

## 01.04
* [프로그래머스 : 가장 긴 팰린드롬](https://programmers.co.kr/learn/courses/30/lessons/12904)
* [Leetcode : Valid palindrome ii](https://leetcode.com/problems/valid-palindrome-ii/)
* [LeetCode : Longest palindromic substring](https://leetcode.com/problems/longest-palindromic-substring/)

## 12.28
* [프로그래머스 : 올바른 괄호](https://programmers.co.kr/learn/courses/30/lessons/12909)
* [Leetcode : Valid anagram](https://leetcode.com/problems/valid-anagram/)
* [Leetcode : Validate IP Address](https://leetcode.com/problems/validate-ip-address/)

## 12.14
* [프로그래머스 : 타일장식물](https://programmers.co.kr/learn/courses/30/lessons/43104)
* [Leetcode : House robber](https://leetcode.com/problems/house-robber/)
* [Leetcode : Maximum sum of 3 non overlapping subarrays](https://leetcode.com/problems/maximum-sum-of-3-non-overlapping-subarrays/)

## 12.07
* [프로그래머스 : 가장 먼 노드](https://programmers.co.kr/learn/courses/30/lessons/49189)
* [Leetcode : All Nodes Distance K in Binary Tree](https://leetcode.com/problems/all-nodes-distance-k-in-binary-tree/)
* [Leetcode : Minimum depth of binary tree](https://leetcode.com/problems/minimum-depth-of-binary-tree/)

## 11.29
* [프로그래머스 : 영어 끝말잇기](https://programmers.co.kr/learn/courses/30/lessons/12981)
* [Leetcode : Isomorphic Strings](https://leetcode.com/problems/isomorphic-strings/)
* [Leetcode : Group Anagrams](https://leetcode.com/problems/group-anagrams)

## 11.23
* [프로그래머스 : 등굣길](https://programmers.co.kr/learn/courses/30/lessons/42898)
* [Leetcode : Best time to buy and sell stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
* [Leetcode : Number of music playlists](https://leetcode.com/problems/number-of-music-playlists/)

## 11.16
* [프로그래머스 : 단어변환](https://programmers.co.kr/learn/courses/30/lessons/43163)
* [Leetcode : Buddy Strings](https://leetcode.com/problems/buddy-strings/)
* [Leetcode : Smallest String With Swaps](https://leetcode.com/problems/smallest-string-with-swaps/)

## 11.09
* [프로그래머스 : 타켓넘버](https://programmers.co.kr/learn/courses/30/lessons/43165) 
* [Leetcode : Backspace String compare](https://leetcode.com/problems/backspace-string-compare/) 
* [Leetcode : Sort Colors](https://leetcode.com/problems/sort-colors/) ([설명](https://www.notion.so/cheol94/075-Sort-Colors-4b86cdb7d2eb412186f99145d5987c11)<img src="https://cdn.icon-icons.com/icons2/827/PNG/512/document_icon-icons.com_66534.png" width="20" height="20" />)

## 11.02
* [프로그래머스 : K번째 수](https://programmers.co.kr/learn/courses/30/lessons/42748)
* [Leetcode : Relative Sort Array](https://leetcode.com/problems/relative-sort-array)
* [Leetcode : K Closest Points to Origin](https://leetcode.com/problems/k-closest-points-to-origin/)

## 10.26
* [프로그래머스 : 완주하지 못한 선수](https://programmers.co.kr/learn/courses/30/lessons/42576)
* [Leetcode : Top k frequent elements](https://leetcode.com/problems/top-k-frequent-elements/)

## 10.19
* [merge-two-sorted-lists](https://leetcode.com/problems/merge-two-sorted-lists/)
* [merge-k-sorted-lists](https://leetcode.com/problems/merge-k-sorted-lists/)

## 10.12
* [Delete node in a linked list](https://leetcode.com/problems/delete-node-in-a-linked-list/)
* [Critical connections in a network](https://leetcode.com/problems/critical-connections-in-a-network)

## 10.05
* [Maximum depth of N ary tree](https://leetcode.com/problems/maximum-depth-of-n-ary-tree/)
* [Longest increasing path in a matrix](https://leetcode.com/problems/longest-increasing-path-in-a-matrix/)

## 09.28
* [Linked list cycle](https://leetcode.com/problems/linked-list-cycle/) ([설명](https://youtu.be/MCUsPSJ_cwk)<img src="/icon.png" width="20" height="20" />)
* [Linked list cycle II](https://leetcode.com/problems/linked-list-cycle-ii/) ([설명](https://youtu.be/QOr1Wt-z_eI) <img src="/icon.png" width="20" height="20" />)

## 09.21
* [Match order](https://algospot.com/judge/problem/read/MATCHORDER#)
* [Two city scheduling](https://leetcode.com/problems/two-city-scheduling/)
* [Queue reconstruction by height](https://leetcode.com/problems/queue-reconstruction-by-height/)

## 09.07
* [Container with most water](https://leetcode.com/problems/container-with-most-water/)
* [Daily temperature](https://leetcode.com/problems/daily-temperatures/description/)

## 08.30
* [Uncommon Words from Two Sentences](https://leetcode.com/problems/uncommon-words-from-two-sentences/)
* [Top k frequent words](https://leetcode.com/problems/top-k-frequent-words/)

## 08.24
* [Min Cost Climbing Stairs](https://leetcode.com/problems/min-cost-climbing-stairs/)
* [Dungeon Game](https://leetcode.com/problems/dungeon-game/)

## 08.17
 * [Letter case permutation](https://leetcode.com/problems/letter-case-permutation/)
 * [Permutations ii](https://leetcode.com/problems/permutations-ii/)

## 08.10
* [Missing number](https://leetcode.com/problems/missing-number/description/)
* [K similar strings](https://leetcode.com/problems/k-similar-strings/description/)

## 08.03
* [Maximum subarray](https://leetcode.com/problems/maximum-subarray/)
* [Maximum product subarray](https://leetcode.com/problems/maximum-product-subarray/)

## 07.28
* [Middle of the linked list](https://leetcode.com/problems/middle-of-the-linked-list/)
* [Find median from data stream](https://leetcode.com/problems/find-median-from-data-stream/)

## 07.19
* [Reverse Linked List](https://leetcode.com/problems/reverse-linked-list/)
* [Reverse Linked List II](https://leetcode.com/problems/reverse-linked-list-ii/)

## 07.12
* [Path Sum](https://leetcode.com/problems/path-sum/)
* [Path Sum II](https://leetcode.com/problems/path-sum-ii/)
* [Sum Root to Leaf Numbers](https://leetcode.com/problems/sum-root-to-leaf-numbers/)

## 07.05
* [Best Time to Buy and Sell Stock](https://leetcode.com/problems/best-time-to-buy-and-sell-stock/)
* [Best Time to Buy and Sell Stock with Cooldown](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-cooldown/)
* [Best Time to Buy and Sell Stock with Transaction Fee](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-with-transaction-fee/)

## 06.29
* [Rotate Array](https://leetcode.com/problems/rotate-array/)
* [Rotate Image](https://leetcode.com/problems/rotate-image/)

## 06.21
* [Peak Index in a Mountain Array](https://leetcode.com/problems/peak-index-in-a-mountain-array/)
* [Find Peak Element](https://leetcode.com/problems/find-peak-element/)

## 06.15
* [Shortest Unsorted Continuous Subarray](https://leetcode.com/problems/shortest-unsorted-continuous-subarray/)
* [Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/)

## 06.08
* [Search in a Binary Search Tree](https://leetcode.com/problems/search-in-a-binary-search-tree/)
* [Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)

## 06.01
* [Climbing Stairs](https://leetcode.com/problems/climbing-stairs/)
* [minimum score triangulation of polygon](https://leetcode.com/problems/minimum-score-triangulation-of-polygon/)

## 05.25
* [Verifying an alien dictionary](https://leetcode.com/problems/verifying-an-alien-dictionary/)
* [Word Break II](https://leetcode.com/problems/word-break-ii/)

## 05.18
* [Shortest distance to a character](https://leetcode.com/problems/shortest-distance-to-a-character/)
* [Number of Longeast Increasing Subsequence](https://leetcode.com/problems/number-of-longest-increasing-subsequence/)
* [Erect the Fence](https://leetcode.com/problems/erect-the-fence/)

## 05.11
* [Valid Perfect Square](https://leetcode.com/problems/valid-perfect-square/)[Assign Cookies](https://leetcode.com/problems/assign-cookies/)
* [Russian Doll Envelopes](https://leetcode.com/problems/russian-doll-envelopes/)

## 05.04
* [Valid Parentheses](https://leetcode.com/problems/valid-parentheses/description/)
* [Longest Valid Parentheses](https://leetcode.com/problems/longest-valid-parentheses/description/)

## 04.27
* [Single Number](https://leetcode.com/problems/single-number/)
* [Counting Bits](https://leetcode.com/problems/counting-bits/)

## 04.19
* [Two Sum](https://leetcode.com/problems/two-sum/)
* [3Sum](https://leetcode.com/problems/3sum/)
* [3Sum Closest](https://leetcode.com/problems/3sum-closest/)

## 04.13
* [Kth Largest Element in a Stream](https://leetcode.com/problems/kth-largest-element-in-a-stream/)
* [Cheapest Flights Within K Stops](https://leetcode.com/problems/cheapest-flights-within-k-stops/)

## 04.05
* [Find common characters](https://leetcode.com/problems/find-common-characters/)
* [Maximum frequency stack](https://leetcode.com/problems/maximum-frequency-stack/)

## 03.30
* [Intersection of two arrays](https://leetcode.com/problems/intersection-of-two-arrays/)
* [Search in rotated sorted array](https://leetcode.com/problems/search-in-rotated-sorted-array/)

## 03.20
* [Assign Cookies](https://leetcode.com/problems/assign-cookies/)
* [Course Schedule III](https://leetcode.com/problems/course-schedule-iii/description/)

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