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Leetcode

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🎓Leetcode solutions in Python 📚

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# Python solution for Leetcode
Python solution of problems from [LeetCode](https://leetcode.com/).

##### [Extra Algorithms](./Extra/)
| # | Title | Solution |
|---| ----- | -------- | 
|1|Suffix Array|[Python](./Extra/suffix_array.py)|
|2|Longest Common Prefix|[Python](./Extra/lcp.py)|

### LeetCode Algorithm

##### [Problems 1100-1200](./1200-1300q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|1296|[Divide Array in Sets of K Consecutive Numbers](https://leetcode.com/problems/divide-array-in-sets-of-k-consecutive-numbers/)|[Python](./1200-1300q/1296.py)|Medium|
|1295|[Find Numbers with Even Number of Digits](https://leetcode.com/problems/find-numbers-with-even-number-of-digits/)|[Python](./1200-1300q/1295.py)|Easy|
|1291|[Sequential Digits](https://leetcode.com/problems/sequential-digits/)|[Python](./1200-1300q/1291.py)|Medium|
|1290|[Convert Binary Number in a Linked List to Integer](https://leetcode.com/problems/convert-binary-number-in-a-linked-list-to-integer/)|[Python](./1200-1300q/1290.py)|Easy|
|1283|[Find the Smallest Divisor Given a Threshold](https://leetcode.com/problems/find-the-smallest-divisor-given-a-threshold/)|[Python](./1200-1300q/1283.py)|Medium|
|1282|[Group the People Given the Group Size They Belong To](https://leetcode.com/problems/group-the-people-given-the-group-size-they-belong-to/)|[Python](./1200-1300q/1282.py)|Medium|
|1281|[Subtract the Product and Sum of Digits of an Integer](https://leetcode.com/problems/subtract-the-product-and-sum-of-digits-of-an-integer/)|[Python](./1200-1300q/1281.py)|Easy|
|1277|[Count Square Submatrices with All Ones](https://leetcode.com/problems/count-square-submatrices-with-all-ones/)|[Python](./1200-1300q/1277.py)|Medium|
|1276|[Number of Burgers with No Waste of Ingredients](https://leetcode.com/problems/number-of-burgers-with-no-waste-of-ingredients/)|[Python](./1200-1300q/1276.py)|Medium|
|1275|[Find Winner on a Tic Tac Toe Game](https://leetcode.com/problems/find-winner-on-a-tic-tac-toe-game/)|[Python](./1200-1300q/1275.py)|Easy|
|1268|[Search Suggestions System](https://leetcode.com/problems/search-suggestions-system/)|[Python](./1200-1300q/1268.py)|Medium|
|1267|[Count Servers that Communicate](https://leetcode.com/problems/count-servers-that-communicate/)|[Python](./1200-1300q/1267.py)|Medium|
|1266|[Minimum Time Visiting All Points](https://leetcode.com/problems/minimum-time-visiting-all-points/)|[Python](./1200-1300q/1266.py)|Easy|
|1200|[Minimum Absolute Difference](https://leetcode.com/problems/minimum-absolute-difference/)|[Python](./1200-1300q/1200.py)|Easy|

##### [Problems 1100-1200](./1100-1200q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|1191|[K-Concatenation Maximum Sum](https://leetcode.com/problems/k-concatenation-maximum-sum/)|[Python](./1100-1200q/1191.py)|Medium|
|1190|[Reverse Substrings Between Each Pair of Parentheses](https://leetcode.com/problems/reverse-substrings-between-each-pair-of-parentheses/)|[Python](./1100-1200q/1190.py)|Medium|
|1189|[ Maximum Number of Balloons](https://leetcode.com/problems/maximum-number-of-balloons/)|[Python](./1100-1200q/1189.py)|Easy|
|1186|[Maximum Subarray Sum with One Deletion](https://leetcode.com/problems/maximum-subarray-sum-with-one-deletion/)|[Python](./1100-1200q/1186.py)|Medium|
|1185|[Day of the Week](https://leetcode.com/problems/day-of-the-week/)|[Python](./1100-1200q/1185.py)|Easy|
|1184|[Distance Between Bus Stops](https://leetcode.com/problems/distance-between-bus-stops/)|[Python](./1100-1200q/1184.py)|Easy|

##### [Problems 1000-1100](./1000-1100q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|1092|[Shortest Common Supersequence](https://leetcode.com/problems/shortest-common-supersequence)|[Python](./1000-1100q/1092.py)|Hard|
|1091|[Shortest Path in Binary Matrix](https://leetcode.com/problems/shortest-path-in-binary-matrix)|[Python](./1000-1100q/1091.py)|Medium|
|1090|[Largest Values From Labels ](https://leetcode.com/problems/largest-values-from-labels)|[Python](./1000-1100q/1090.py)|Medium|
|1089|[Duplicate Zeros](https://leetcode.com/problems/duplicate-zeros)|[Python](./1000-1100q/1089.py)|Easy|
|1088|[Confusing Number II](https://leetcode.com/problems/confusing-number-ii)|[Python](./1000-1100q/1088.py)|Hard|
|1087|[Brace Expansion](https://leetcode.com/problems/brace-expansion)|[Python](./1000-1100q/1087.py)|Medium|
|1086|[High Five](https://leetcode.com/problems/high-five)|[Python](./1000-1100q/1086.py)|Medium|
|1085|[Sum of Digits in the Minimum Number](https://leetcode.com/problems/sum-of-digits-in-the-minimum-number)|[Python](./1000-1100q/1085.py)|Medium|
|1081|[Smallest Subsequence of Distinct Characters](https://leetcode.com/problems/smallest-subsequence-of-distinct-characters)|[Python](./1000-1100q/1081.py)|Medium|
|1080|[Insufficient Nodes in Root to Leaf Paths](https://leetcode.com/problems/insufficient-nodes-in-root-to-leaf-paths)|[Python](./1000-1100q/1080.py)|Medium|
|1079|[Letter Tile Possibilities](https://leetcode.com/problems/letter-tile-possibilities)|[Python](./1000-1100q/1079.py)|Medium|
|1078|[Occurrences After Bigram](https://leetcode.com/problems/occurrences-after-bigram)|[Python](./1000-1100q/1078.py)|Easy|
|1074|[Number of Submatrices That Sum to Target](https://leetcode.com/problems/number-of-submatrices-that-sum-to-target/)|[Python](./1000-1100q/1074.py)|Hard|
|1073|[Adding Two Negabinary Numbers](https://leetcode.com/problems/adding-two-negabinary-numbers)|[Python](./1000-1100q/1073.py)|Medium|
|1072|[Flip Columns For Maximum Number of Equal Rows](https://leetcode.com/problems/flip-columns-for-maximum-number-of-equal-rows)|[Python](./1000-1100q/1072.py)|Medium|
|1071|[Greatest Common Divisor of Strings](https://leetcode.com/problems/greatest-common-divisor-of-strings)|[Python](./1000-1100q/1071.py)|Easy|
|1065|[Index Pairs of a String](https://leetcode.com/problems/index-pairs-of-a-string)|[Python](./1000-1100q/1065.py)|Easy|
|1064|[Fixed Point](https://leetcode.com/problems/fixed-point)|[Python](./1000-1100q/1064.py)|Easy|
|1054|[Distant Barcodes](https://leetcode.com/problems/distant-barcodes)|[Python](./1000-1100q/1054.py)|Medium|	
|1053|[Previous Permutation With One Swap](https://leetcode.com/problems/previous-permutation-with-one-swap)|[Python](./1000-1100q/1053.py)|Medium|
|1052|[Grumpy Bookstore Owner](https://leetcode.com/problems/grumpy-bookstore-owner)|[Python](./1000-1100q/1052.py)|Medium|
|1051|[Height Checker](https://leetcode.com/problems/height-checker)|[Python](./1000-1100q/1051.py)|Easy|	
|1048|[Longest String Chain](https://leetcode.com/problems/longest-string-chain)|[Python](./1000-1100q/1048.py)|Medium|
|1047|[Remove All Adjacent Duplicates In String](https://leetcode.com/problems/remove-all-adjacent-duplicates-in-string)|[Python](./1000-1100q/1047.py)|Easy|
|1046|[Last Stone Weight](https://leetcode.com/problems/last-stone-weight)|[Python](./1000-1100q/1046.py)|Easy|
|1044|[Longest Duplicate Substring](https://leetcode.com/problems/longest-duplicate-substring)|[Python](./1000-1100q/1044.py)|Hard|
|1043|[Partition Array for Maximum Sum](https://leetcode.com/problems/partition-array-for-maximum-sum/)|[Python](./1000-1100q/1043.py)|Medium|
|1042|[Flower Planting With No Adjacent](https://leetcode.com/problems/flower-planting-with-no-adjacent)|[Python](./1000-1100q/1042.py)|Easy|
|1041|[Robot Bounded In Circle](https://leetcode.com/problems/robot-bounded-in-circle)|[Python](./1000-1100q/1041.py)|Easy|
|1039|[Minimum Score Triangulation of Polygon](https://leetcode.com/problems/minimum-score-triangulation-of-polygon)|[Python](./1000-1100q/1039.py)|Medium|
|1038|[Binary Search Tree to Greater Sum Tree](https://leetcode.com/problems/binary-search-tree-to-greater-sum-tree/)|[Python](./1000-1100q/1038.py)|Medium|
|1037|[Valid Boomerang](https://leetcode.com/problems/valid-boomerang/)|[Python](./1000-1100q/1037.py)|Easy|
|1035|[Uncrossed Lines](https://leetcode.com/problems/uncrossed-lines/)|[Python](./1000-1100q/1035.py)|Medium|
|1034|[Coloring A Border](https://leetcode.com/problems/coloring-a-border/)|[Python](./1000-1100q/1034.py)|Medium|
|1033|[Moving Stones Until Consecutive](https://leetcode.com/problems/moving-stones-until-consecutive)|[Python](./1000-1100q/1033.py)|Easy
|1032|[Stream of Characters](https://leetcode.com/problems/stream-of-characters)|[Python](./1000-1100q/1032.py)|Hard|
|1031|[Maximum Sum of Two Non-Overlapping Subarrays](https://leetcode.com/problems/maximum-sum-of-two-non-overlapping-subarrays)|[Python](./1000-1100q/1031.py)|Medium|
|1030|[Matrix Cells in Distance Order](https://leetcode.com/problems/matrix-cells-in-distance-order)|[Python](./1000-1100/1030.py)|Easy|
|1029|[Two City Scheduling](https://leetcode.com/problems/two-city-scheduling)|[Python](./1000-1100q/1029.py)|Easy|
|1028|[Recover a Tree From Preorder Traversal](https://leetcode.com/problems/recover-a-tree-from-preorder-traversal)|[Python](./1000-1100q/1028.py)|Hard|
|1027|[Longest Arithmetic Sequence](https://leetcode.com/problems/longest-arithmetic-sequence)|[Python](./1000-1100q/1027.py)|Medium|
|1026|[Maximum Difference Between Node and Ancestor](https://leetcode.com/problems/maximum-difference-between-node-and-ancestor)|[Python](./1000-1100q/1026.py)|Medium|
|1025|[Divisor Game](https://leetcode.com/problems/divisor-game/)|[Python](./1000-1100q/1025.py)|Easy|
|1023|[Camelcase Matching](https://leetcode.com/problems/camelcase-matching)|[Python](./1000-1100q/1023.py)|Medium|
|1022|[Sum of Root To Leaf Binary Numbers](https://leetcode.com/problems/sum-of-root-to-leaf-binary-numbers)|[Python](./1000-1100q/1022.py)|Easy|
|1021|[Remove Outermost Parentheses](https://leetcode.com/problems/remove-outermost-parentheses)|[Python](./1000-1100q/1021.py)|Easy|
|1020|[Number of Enclaves](https://leetcode.com/problems/number-of-enclaves)|[Python](./1000-1100q/1020.py)|Medium|
|1019|[Next Greater Node In Linked List](https://leetcode.com/problems/next-greater-node-in-linked-list)|[Python](./1000-1100q/1019.py)|Medium|
|1018|[Binary Prefix Divisible By 5](https://leetcode.com/problems/binary-prefix-divisible-by-5)|[Python](./1000-1100q/1018.py)|Easy|
|1017|[Convert to Base -2](https://leetcode.com/problems/convert-to-base-2)|[Python](./1000-1100q/1017.py)|Medium|
|1016|[Binary String With Substrings Representing 1 To N](https://leetcode.com/problems/binary-string-with-substrings-representing-1-to-n)|[Python](./1000-1100q/1016.py)|Medium|
|1015|[Smallest Integer Divisible by K](https://leetcode.com/problems/smallest-integer-divisible-by-k)|[Python](./1000-1100q/1015.py)|Medium|
|1014|[Best Sightseeing Pair](https://leetcode.com/problems/best-sightseeing-pair)|[Python](./1000-1100q/1014.py)|Medium|
|1013|[Partition Array Into Three Parts With Equal Sum ](https://leetcode.com/problems/partition-array-into-three-parts-with-equal-sum) | [Python](./1000-1100q/1013.py)|Easy|
|1011|[Capacity To Ship Packages Within D Days](https://leetcode.com/problems/capacity-to-ship-packages-within-d-days/) | [Python](./1000-1100q/1011.py) | Medium|
|1010|[Pairs of Songs With Total Durations Divisible by 60](https://leetcode.com/problems/pairs-of-songs-with-total-durations-divisible-by-60/)|[Python](./1000-1100q/1010.py)|Easy|
|1009|[Complement of Base 10 Integer](https://leetcode.com/problems/complement-of-base-10-integer/) | [Python](./1000-1100q/1009.py)|Easy|
|1008|[Construct Binary Search Tree from Preorder Traversal](https://leetcode.com/problems/construct-binary-search-tree-from-preorder-traversal)|[Python](./1000-1100q/1008.py)|Medium|
|1007|[Minimum Domino Rotations For Equal Row](https://leetcode.com/problems/minimum-domino-rotations-for-equal-row)|[Python](./1000-1100q/1007.py)|Medium|
|1006|[Clumsy Factorial](https://leetcode.com/problems/clumsy-factorial)|[Python](./1000-1100q/1006.py)|Medium|
|1005|[Maximize Sum Of Array After K Negations](https://leetcode.com/problems/maximize-sum-of-array-after-k-negations)|[Python](./1000-1100q/1005.py)|Easy|
|1004|[Max Consecutive Ones III](https://leetcode.com/problems/max-consecutive-ones-iii)|[Python](./1000-1100q/1004.py)|Medium|
|1003|[Check If Word Is Valid After Substitutions](https://leetcode.com/problems/check-if-word-is-valid-after-substitutions)|[Python](./1000-1100q/1003.py)|Medium|
|1002|[Find Common Characters](https://leetcode.com/problems/find-common-characters)|[Python](./1000-1100q/1002.py)|Easy|

##### [Problems 900-1000](./900-1000q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|999|[Available Captures for Rook](https://leetcode.com/problems/available-captures-for-rook/)|[Python](./900-1000q/999.py)|Medium|
|998|[Maximum Binary Tree II](https://leetcode.com/problems/maximum-binary-tree-ii) | [Python](./900-1000q/998.py) | Easy|
|997|[Find the Town Judge](https://leetcode.com/problems/find-the-town-judge/) | [Python](./900-1000q/997.py) | Easy|
|995|[Minimum Number of K Consecutive Bit Flips](https://leetcode.com/problems/minimum-number-of-k-consecutive-bit-flips/) | [Python](./900-1000q/995.py) | Hard|
|994|[Rotting Oranges](https://leetcode.com/problems/rotting-oranges/) | [Python](./900-1000q/994.py)|Easy|
|993|[Cousins in Binary Tree](https://leetcode.com/problems/cousins-in-binary-tree/) | [Python](./900-1000q/993.py)|Easy|
|991|[Broken Calculator](https://leetcode.com/problems/broken-calculator/) | [Python](./900-1000q/991.py)|Medium|
|990|[Satisfiability of Equality Equations](https://leetcode.com/problems/satisfiability-of-equality-equations/) | [Python](./900-1000q/990.py)|Medium|
|989|[Add to Array-Form of Integer](https://leetcode.com/problems/add-to-array-form-of-integer/)|[Python](./900-1000q/989.py)|Easy|
|988|[Smallest String Starting From Leaf](https://leetcode.com/problems/smallest-string-starting-from-leaf/) | [Python](./900-1000q/988.py)|Medium|
|985|[Sum of Even Numbers After Queries](https://leetcode.com/problems/sum-of-even-numbers-after-queries/) | [Python](./900-1000q/985.py)|Easy|
|984|[String Without AAA or BBB](https://leetcode.com/problems/string-without-aaa-or-bbb/) | [Python](./900-1000q/984.py)|Easy|
|983|[Minimum Cost For Tickets](https://leetcode.com/problems/minimum-cost-for-tickets/) | [Python](./900-1000q/983.py)|Medium|
|981|[Time Based Key-Value Store](https://leetcode.com/problems/time-based-key-value-store/) | [Python](./900-1000q/981.py)|Medium|
|977|[Squares of a Sorted Array](https://leetcode.com/problems/squares-of-a-sorted-array/) | [Python](./900-1000q/977.py)|Easy|
|926|[Flip String to Monotone Increasing](https://leetcode.com/problems/flip-string-to-monotone-increasing)|[Python](./900-1000q/926.py)|Medium|

##### [Problems 600-700](./600-700q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|681|[Next Closest Time ](https://leetcode.com/problems/next-closest-time)|[Python](./600-700q/681.py)|Medium|
|674|[Longest Continuous Increasing Subsequence](https://leetcode.com/problems/longest-continuous-increasing-subsequence)|[Python](./600-700/674.py)|Easy|
|673|[Number of Longest Increasing Subsequence](https://leetcode.com/problems/number-of-longest-increasing-subsequence)|[Python](./600-700q/673.py)|Medium|

##### [Problems 400-500](./400-500Q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|482|[License Key Formatting](https://leetcode.com/problems/license-key-formatting)|[Python](./400-500q/482.py)|Easy|
|454|[4Sum II](https://leetcode.com/problems/4sum-ii/)|[Python](./400-500Q/454.py)|Medium|
|448|[Find All Numbers Disappeared in an Array](https://leetcode.com/problems/find-all-numbers-disappeared-in-an-array)|[Python](./400-500q/448.py)|Easy|
|442|[Find All Duplicates in an Array](https://leetcode.com/problems/find-all-duplicates-in-an-array)|[Python](./400-500q/442.py)|Easy|
|418|[Sentence Screen Fitting](https://leetcode.com/problems/sentence-screen-fitting)|[Python](./400-500q/418.py)|Medium|
|410|[Split Array Largest Sum](https://leetcode.com/problems/split-array-largest-sum/) | [Python](./400-500Q/410.py)|Hard|

##### [Problems 300-400](./300-400q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|393|[UTF-8 Validation](https://leetcode.com/problems/utf-8-validation/)|[Python](./300-400q/393.py)|Medium|
|388|[Longest Absolute File Path](https://leetcode.com/problems/longest-absolute-file-path)|[Python](./300-400q/388.py)|Medium|
|387|[First Unique Character in a String](https://leetcode.com/problems/first-unique-character-in-a-string/) | [Python](./300-400q/387.py)|Easy|
|380|[Insert Delete GetRandom O(1)](https://leetcode.com/problems/insert-delete-getrandom-o1/) | [Python](./300-400q/380.py)|Hard|
|378|[Kth Smallest Element in a Sorted Matrix](https://leetcode.com/problems/kth-smallest-element-in-a-sorted-matrix) | [Python](./300-400q/378.py)|Medium|
|361|[Bomb Enemy](https://leetcode.com/problems/bomb-enemy)|[Python](./300-400q/361.py)|Medium|
|350|[Intersection of Two Arrays II](https://leetcode.com/problems/intersection-of-two-arrays-ii/) | [Python](./300-400q/350.py)|Easy|
|347|[Top K Frequent Elements](https://leetcode.com/problems/top-k-frequent-elements/) | [Python](./300-400q/347.py)|Medium|
|346|[Moving Average from Data Stream](https://leetcode.com/problems/moving-average-from-data-stream)|[Python](./300-400q/346.py)|Easy|
|340|[Longest Substring with At Most K Distinct Characters](https://leetcode.com/problems/longest-substring-with-at-most-k-distinct-characters)|[Python](./300-400q/340.py)|Hard|
|334|[Increasing Triplet Subsequence](https://leetcode.com/problems/increasing-triplet-subsequence/) | [Python](./300-400q/334.py)|Medium|
|332|[Reconstruct Itinerary](https://leetcode.com/problems/reconstruct-itinerary/)|[Python](./300-400q/332.py)|Medium|
|329|[Longest Increasing Path in a Matrix](https://leetcode.com/problems/longest-increasing-path-in-a-matrix/) | [Python](./300-400q/329.py)|Medium|
|328|[Odd Even Linked List](https://leetcode.com/problems/odd-even-linked-list/) | [Python](./300-400q/328.py)|Easy|
|326|[Power of Three](https://leetcode.com/problems/power-of-three/) | [Python](./300-400q/326.py)|Easy|
|322|[Coin Change](https://leetcode.com/problems/coin-change/) | [Python](./300-400q/322.py)|Medium|
|315|[Count of Smaller Numbers After Self](https://leetcode.com/problems/count-of-smaller-numbers-after-self/) | [Python](./300-400q/315.py)|Hard|
|307|[Range Sum Query - Mutable](https://leetcode.com/problems/range-sum-query-mutable)|[Python](./300-400q/307.py)|Medium|
|301|[Remove Invalid Parentheses](https://leetcode.com/problems/remove-invalid-parentheses)|[Python](./300-400q/301.py)|Hard|

##### [Problems 200-300q](./200-300q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|300|[Longest Increasing Subsequence](https://leetcode.com/problems/longest-increasing-subsequence/)  | [Python](./200-300q/300.py)|Medium|
|298|[Binary Tree Longest Consecutive Sequence ](https://leetcode.com/problems/binary-tree-longest-consecutive-sequence)|[Python](./200-300q/298.py)|Medium|
|297|[Serialize and Deserialize Binary Tree](https://leetcode.com/problems/serialize-and-deserialize-binary-tree) | [Python](./200-300q/297.py)|Hard|
|295|[Find Median from Data Stream](https://leetcode.com/problems/find-median-from-data-stream/) | [Python](./200-300q/295.py)|Hard|
|289|[Game of Life](https://leetcode.com/problems/game-of-life) | [Python](/200-300q/289.py)|Medium|
|287|[Find the Duplicate Number](https://leetcode.com/problems/find-the-duplicate-number/)  | [Python](./200-300q/287.py)|Hard|
|285|[Inorder Successor in BST](https://leetcode.com/problems/inorder-successor-in-bst) | [Python](./200-300q/285.py)|Medium|
|283|[Move Zeros](https://leetcode.com/problems/move-zeroes)|[Python](./200-300q/283.py)|Easy|
|281|[Zigzag Iterator](https://leetcode.com/problems/zigzag-iterator)|[Python](./200-300q/281.py)|Medium|
|279|[Perfect Squares](https://leetcode.com/problems/perfect-squares/) | [Python](./200-300q/279.py)|Medium|
|268|[Missing Number](https://leetcode.com/problems/missing-number)|[Python](./200-300q/268.py)|Easy|
|257|[Binary Tree Paths](https://leetcode.com/problems/binary-tree-paths)|[Python](./200-300q/257.py)|Easy|
|253|[Meeting Rooms II](https://leetcode.com/problems/meeting-rooms-ii) | [Python](./200-300q/253.py)|Medium|
|240|[Search a 2D Matrix II](https://leetcode.com/problems/search-a-2d-matrix-ii/)|[Python](./200-300q/240.py)|Medium|
|239|[Sliding Window Maximum](https://leetcode.com/problems/sliding-window-maximum/)| [Python](./200-300q/239.py)|Hard|
|238|[Product of Array Except Self](https://leetcode.com/problems/product-of-array-except-self/)| [Python](./200-300q/238.py)|Medium|
|236|[Lowest Common Ancestor of a Binary Tree](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-tree/)| [Python](./200-300q/236.py)|Medium|
|235|[Lowest Common Ancestor of a Binary Search Tree](https://leetcode.com/problems/lowest-common-ancestor-of-a-binary-search-tree/)|[Python](./200-300q/235.py)|Easy|
|234|[Palindrome Linked List](https://leetcode.com/problems/palindrome-linked-list/)| [Python](./200-300q/234.py)|Easy|
|230|[Kth Smallest Element in a BST](https://leetcode.com/problems/kth-smallest-element-in-a-bst/)| [Python](./200-300q/230.py)|Medium|
|226|[Invert Binary Tree](https://leetcode.com/problems/invert-binary-tree)|[Python](./200-300q/226.py)|Easy|
|215|[Kth Largest Element in an Array](https://leetcode.com/problems/kth-largest-element-in-an-array/)| [Python](./200-300q/215.py)|Medium|
|210|[Course Schedule II](https://leetcode.com/problems/course-schedule-ii/)| [Python](./200-300q/210.py)|Medium|
|208|[Implement Trie (Prefix Tree)](https://leetcode.com/problems/implement-trie-prefix-tree/)| [Python](./200-300q/208.py)|Medium|
|207|[Course Schedule](https://leetcode.com/problems/course-schedule/)| [Python](./200-300q/207.py)|Medium|
|206|[Reverse Linked List](https://leetcode.com/problems/reverse-linked-list/)| [Python](./200-300q/206.py)|Easy|
|203|[Remove Linked List Elements](https://leetcode.com/problems/remove-linked-list-elements/)| [Python](./200-300q/203.py)|Easy|
|200|[Number of Islands](https://leetcode.com/problems/number-of-islands/)| [Python](./200-300q/200.py)|Medium|

##### [Problems 100-200](./100-200q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|199|[Binary Tree Right Side View](https://leetcode.com/problems/binary-tree-right-side-view)|[Python](./100-200q/199.py)|Medium|
|191|[Number of 1 Bits](https://leetcode.com/problems/number-of-1-bits/)| [Python](./100-200q/191.py)|Easy|
|179|[Largest Number](https://leetcode.com/problems/largest-number/) | [Python](./100-200q/179.py)|Medium|
|173|[Binary Search Tree Iterator](https://leetcode.com/problems/binary-search-tree-iterator)|[Python](./100-200q/173.py)|Medium|
|170|[Two Sum III - Data structure design](https://leetcode.com/problems/two-sum-iii-data-structure-design)|[Python](./100-200q/170.py)|Easy|
|163|[Missing Ranges](https://leetcode.com/problems/missing-ranges)| [Python](./100-200q/163.py)|Medium|
|162|[Find Peak Element](https://leetcode.com/problems/find-peak-element/) | [Python](./100-200q/162.py)|Medium|
|160|[Intersection of Two Linked Lists](https://leetcode.com/problems/intersection-of-two-linked-lists/) | [Python](./100-200q/160.py)|Easy|
|159|[Longest Substring Which Contains 2 Unique Characters](https://leetcode.com/problems/longest-substring-with-at-most-two-distinct-characters)|[Python](./100-200q/159.py)|Hard|
|155|[Min Stack](https://leetcode.com/problems/min-stack/)| [Python](./100-200q/155.py)|Easy|
|152|[Maximum Product Subarray](https://leetcode.com/problems/maximum-product-subarray/)| [Python](./100-200q/152.py)|Medium|
|150|[Evaluate Reverse Polish Notation](https://leetcode.com/problems/evaluate-reverse-polish-notation/)|[Python](./100-200q/150.py)|Medium|
|148|[Sort List](https://leetcode.com/problems/sort-list/)| [Python](./100-200q/148.py)|Medium|
|147|[Insertion Sort List](https://leetcode.com/problems/insertion-sort-list/)| [Python](./100-200q/147.py)|Medium|
|146|[LRU Cache](https://leetcode.com/problems/lru-cache/description/)|[Python](./100-200q/146.py)|Hard|
|145|[Binary Tree Postorder Traversal](https://leetcode.com/problems/binary-tree-postorder-traversal/)| [Python](./100-200q/145.py)|Hard|
|144|[Binary Tree Preorder Traversal](https://leetcode.com/problems/binary-tree-preorder-traversal/)| [Python](.//100-200q/144.py)|Medium|
|143|[Reorder List](https://leetcode.com/problems/reorder-list/)| [Python](./100-200q/143.py)|Medium|
|142|[Linked List Cycle II](https://leetcode.com/problems/linked-list-cycle-ii/)| [Python](./100-200q/142.py)|Medium|
|141|[Linked List Cycle](https://leetcode.com/problems/linked-list-cycle/)| [Python](./100-200q/141.py)|Medium|
|139|[Word Break](https://leetcode.com/problems/word-break/)| [Python](./100-200q/139.py)|Medium|
|134|[Gas Station](https://leetcode.com/problems/gas-station/)| [Python](./100-200q/134.py)|Medium|
|132|[Palindrome Partitioning II](https://leetcode.com/problems/palindrome-partitioning-ii/)| [Python](./100-200q/132.py)|Hard|
|131|[Palindrome Partitioning](https://leetcode.com/problems/palindrome-partitioning/)| [Python](./100-200q/131.py)|Medium|
|130|[Surrounded Regions](https://leetcode.com/problems/surrounded-regions/)| [Python](./100-200q/130.py)|Medium|
|129|[Sum Root to Leaf Numbers](https://leetcode.com/problems/sum-root-to-leaf-numbers/)| [Python](./100-200q/129.py)|Medium|
|128|[Longest Consecutive Sequence](https://leetcode.com/problems/longest-consecutive-sequence/)| [Python](./100-200q/128.py)|Hard|
|127|[Word Ladder](https://leetcode.com/problems/word-ladder/)| [Python](./100-200q/127.py)|Medium|
|125|[Valid Palindrome](https://leetcode.com/problems/valid-palindrome/)| [Python](./100-200q/125.py)|Easy|
|123|[Best Time to Buy and Sell Stock III](https://leetcode.com/problems/best-time-to-buy-and-sell-stock-iii/)| [Python](./100-200q/123.py)|Hard|
|120|[Triangle](https://leetcode.com/problems/triangle/)| [Python](./100-200q/120.py)|Medium|
|119|[Pascal's Triangle II](https://leetcode.com/problems/pascals-triangle-ii/)| [Python](./100-200q/119.py)|Easy|
|118|[Pascal's Triangle](https://leetcode.com/problems/pascals-triangle/)| [Python](./100-200q/118.py)|Easy|
|117|[Populating Next Right Pointers in Each Node II](https://leetcode.com/problems/populating-next-right-pointers-in-each-node-ii/)| [Python](./100-200q/117.py)|Hard|
|116|[Populating Next Right Pointers in Each Node](https://leetcode.com/problems/populating-next-right-pointers-in-each-node/)| [Python](./100-200q/116.py)|Medium|
|115|[Distinct Subsequences](https://leetcode.com/problems/distinct-subsequences/)| [Python](./100-200q/115.py)|Hard|
|113|[Path Sum II](https://leetcode.com/problems/path-sum-ii/)| [Python](./100-200q/113.py)|Medium|
|112|[Path Sum](https://leetcode.com/problems/path-sum/)| [Python](./100-200q/112.py)|Easy|
|111|[Minimum Depth of Binary Tree](https://leetcode.com/problems/minimum-depth-of-binary-tree/)|[Python](./100-200q/111.py)|Easy|
|108|[Convert Sorted Array to Binary Search Tree](https://leetcode.com/problems/convert-sorted-array-to-binary-search-tree/)|[Python](./100-200q/108.py)|Easy|
|107|[Binary Tree Level Order Traversal II](https://leetcode.com/problems/binary-tree-level-order-traversal-ii/)| [Python](./100-200q/107.py)|Easy|
|106|[Construct Binary Tree from Inorder and Postorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-inorder-and-postorder-traversal/)| [Python](./100-200q/106.py)|Medium|
|105|[Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)| [Python](./100-200q/105.py)|Medium|
|103|[Binary Tree Zigzag Level Order Traversal](https://leetcode.com/problems/binary-tree-zigzag-level-order-traversal/)| [Python](./100-200q/103.py)|Medium|
|102|[Binary Tree Level Order Traversal](https://leetcode.com/problems/binary-tree-level-order-traversal/)| [Python](./100-200q/102.py)|Easy|
|101|[Symmetric Tree](https://leetcode.com/problems/symmetric-tree/)| [Python](./100-200q/101.py)|Easy|
|100|[Same Tree](https://leetcode.com/problems/same-tree/)| [Python](./100-200q/100.py)|Easy|

##### [Problems 1-100](./1-100q/)
| # | Title | Solution | Difficulty |
|---| ----- | -------- | ---------- |
|99|[Recover Binary Search Tree](https://leetcode.com/problems/recover-binary-search-tree)|[Python](./1-100q/99.py)|Hard|
|98|[Validate Binary Search Tree](https://leetcode.com/problems/validate-binary-search-tree/)| [Python](./1-100q/98.py)|Medium|
|97|[Interleaving String](https://leetcode.com/problems/interleaving-string/)| [Python](./1-100q/97.py)|Hard|
|95|[Unique Binary Search Trees II](https://leetcode.com/problems/unique-binary-search-trees-ii/)| [Python](./1-100q/95.py)|Medium|
|94|[Binary Tree Inorder Traversal](https://leetcode.com/problems/binary-tree-inorder-traversal)|[Python](./1-100q/94.py)|Medium|
|93|[Restore IP Addresses](https://leetcode.com/problems/restore-ip-addresses/)| [Python](./1-100q/93.py)|Medium|
|92|[Reverse Linked List II](https://leetcode.com/problems/reverse-linked-list-ii/)| [Python](./1-100q/92.py)|Medium|
|91|[Decode Ways](https://leetcode.com/problems/decode-ways/)| [Python](./1-100q/91.py)|Medium|
|90|[Subsets II](https://leetcode.com/problems/subsets-ii/)| [Python](./1-100q/90.py)|Medium|
|87|[Scramble String](https://leetcode.com/problems/scramble-string/)| [Python](./1-100q/87.py)|Hard|
|86|[Partition List](https://leetcode.com/problems/partition-list/)| [Python](./1-100q/86.py)|Medium|
|85|[Maximal Rectangle](https://leetcode.com/problems/maximal-rectangle/)| [Python](./1-100q/85.py)|Hard|
|83|[Remove Duplicates from Sorted List](https://leetcode.com/problems/remove-duplicates-from-sorted-list/)| [Python](./1-100q/83.py)|Easy|
|82|[Remove Duplicates from Sorted List II](https://leetcode.com/problems/remove-duplicates-from-sorted-list-ii/)| [Python](./1-100q/82.py)|Medium|
|81|[Search in Rotated Sorted Array II](https://leetcode.com/problems/search-in-rotated-sorted-array-ii/)| [Python](./1-100q/81.py)|Medium|
|80|[Remove Duplicates from Sorted Array II](https://leetcode.com/problems/remove-duplicates-from-sorted-array-ii/)| [Python](./1-100q/80.py)|Medium|
|79|[Word Search](https://leetcode.com/problems/word-search/)| [Python](./1-100q/79.py)|Medium|
|78|[Subsets](https://leetcode.com/problems/subsets/)| [Python](./1-100q/78.py)|Medium|
|75|[Sort Colors](https://leetcode.com/problems/sort-colors/)| [Python](./1-100q/75.py)|Medium|
|74|[Search a 2D Matrix](https://leetcode.com/problems/search-a-2d-matrix/)| [Python](./1-100q/74.py)|Medium|
|73|[Set Matrix Zeroes](https://leetcode.com/problems/set-matrix-zeroes/)| [Python](./1-100q/73.py)|Medium|
|72|[Edit Distance](https://leetcode.com/problems/edit-distance/)| [Python](./1-100q/72.py)|Hard|
|71|[Simplify Path](https://leetcode.com/problems/simplify-path/)| [Python](./1-100q/71.py)|Medium|
|70|[Climbing Stairs](https://leetcode.com/problems/climbing-stairs/)| [Python](./1-100q/70.py)|Easy|
|67|[Add Binary](https://leetcode.com/problems/add-binary/)| [Python](./1-100q/67.py)|Easy|
|66|[Plus One](https://leetcode.com/problems/plus-one/)| [Python](./1-100q/66.py)|Easy|
|65|[Valid Number](https://leetcode.com/problems/valid-number/)| [Python](./1-100q/65.py)|Easy|
|64|[Minimum Path Sum](https://leetcode.com/problems/minimum-path-sum/)| [Python](./1-100q/64.py)|Medium|
|63|[Unique Paths II](https://leetcode.com/problems/unique-paths-ii/)| [Python](./1-100q/63.py)|Medium|
|62|[Unique Paths](https://leetcode.com/problems/unique-paths/)| [Python](./1-100q/62.py)|Medium|
|61|[Rotate List](https://leetcode.com/problems/rotate-list/)| [Python](./1-100q/61.py)|Medium|
|60|[Permutation Sequence](https://leetcode.com/problems/permutation-sequence/)| [Python](./1-100q/60.py)|Medium|
|57|[Insert Interval](https://leetcode.com/problems/insert-interval/)| [Python](./1-100q/57.py)|Hard|
|56|[Merge Intervals](https://leetcode.com/problems/merge-intervals/)| [Python](./1-100q/56.py)|Hard|
|54|[Spiral Matrix](https://leetcode.com/problems/spiral-matrix/)| [Python](./1-100q/54.py)|Medium|
|53|[Maximum Subarray](https://leetcode.com/problems/maximum-subarray/)| [Python](./1-100q/53.py)|Medium|
|48|[Rotate Image](https://leetcode.com/problems/rotate-image/)| [Python](./1-100q/48.py)|Medium|
|46|[Permutations](https://leetcode.com/problems/permutations/)| [Python](./1-100q/46.py)|Medium|
|45|[Jump Game II](https://leetcode.com/problems/jump-game-ii/)| [Python](./1-100q/45.py)|Hard|
|44|[Wildcard Matching](https://leetcode.com/problems/wildcard-matching/)| [Python](./1-100q/44.py)|Hard|
|42|[Trapping Rain Water](https://leetcode.com/problems/trapping-rain-water/)| [Python](./1-100q/42.py)|Hard|
|41|[First Missing Positive](https://leetcode.com/problems/first-missing-positive/)| [Python](./1-100q/41.py)|Hard|
|40|[Combination Sum II](https://leetcode.com/problems/combination-sum-ii/)| [Python](./1-100q/40.py)|Medium|
|39|[Combination Sum](https://leetcode.com/problems/combination-sum/)| [Python](./1-100q/39.py)|Medium|
|38|[Count and Say](https://leetcode.com/problems/count-and-say/)| [Python](./1-100q/38.py)|Easy|
|36|[Valid Sudoku](https://leetcode.com/problems/valid-sudoku)|[Python](./1-100q/36.py)|Medium|
|34|[Search for a Range](https://leetcode.com/problems/search-for-a-range/)| [Python](./1-100q/34.py)|Medium|
|33|[Search in Rotated Sorted Array](https://leetcode.com/problems/search-in-rotated-sorted-array/)| [Python](./1-100q/33.py)|Hard|
|32|[Longest Valid Parentheses](https://leetcode.com/problems/longest-valid-parentheses/)| [Python](./1-100q/32.py)|Hard|
|31|[Next Permutation](https://leetcode.com/problems/next-permutation/)| [Python](./1-100q/31.py)|Medium|
|30|[Substring with Concatenation of All Words](https://leetcode.com/problems/substring-with-concatenation-of-all-words/)| [Python](./1-100q/30.py)|Hard|
|26|[Remove Duplicates from Sorted Array](https://leetcode.com/problems/remove-duplicates-from-sorted-array/)| [Python](./1-100q/26.py)|Easy|
|25|[Reverse Nodes in k-Group](https://leetcode.com/problems/reverse-nodes-in-k-group/)| [Python](./1-100q/25.py)|Hard|
|24|[Swap Nodes in Pairs](https://leetcode.com/problems/swap-nodes-in-pairs/)| [Python](./1-100q/24.py)|Medium|
|23|[Merge k Sorted Lists](https://leetcode.com/problems/merge-k-sorted-lists/)| [Python](.//1-100q/23.py)|Hard|
|22|[Generate Parentheses](https://leetcode.com/problems/generate-parentheses/)| [Python](./1-100q/22.py)|Medium|
|19|[Remove Nth Node From End of List](https://leetcode.com/problems/remove-nth-node-from-end-of-list/)| [Python](./1-100q/19.py)|Easy|
|18|[4Sum](https://leetcode.com/problems/4sum/)| [Python](./1-100q/18.py)|Medium|
|17|[Letter Combinations of a Phone Number](https://leetcode.com/problems/letter-combinations-of-a-phone-number/)| [Python](./1-100q/17.py)|Medium|
|16|[3Sum Closest](https://leetcode.com/problems/3sum-closest/)| [Python](./1-100q/16.py)|Medium|
|15|[3Sum](https://leetcode.com/problems/3sum/)| [Python](./1-100q/15.py)|Medium|
|14|[Longest Common Prefix](https://leetcode.com/problems/longest-common-prefix)|[Python](./1-100q/14.py)|Easy|
|11|[Container With Most Water](https://leetcode.com/problems/container-with-most-water/)| [Python](./1-100q/11.py)|Medium|
|10|[Regular Expression Matching](https://leetcode.com/problems/regular-expression-matching/)| [Python](./1-100q/10.py)|Hard|
|6|[ZigZag Conversion](https://leetcode.com/problems/zigzag-conversion/)| [Python](./1-100q/06.py)|Easy|
|5|[Longest Palindromic Substring](https://leetcode.com/problems/longest-palindromic-substring/)| [Python](./1-100q/05.py)|Medium|
|4|[Median of Two Sorted Arrays](https://leetcode.com/problems/median-of-two-sorted-arrays/)| [Python](./1-100q/4.py)|Hard|
|3|[Longest Substring Without Repeating Characters](https://leetcode.com/problems/longest-substring-without-repeating-characters/)| [Python](./1-100q/03.py)|Medium|
|1|[Two Sum](https://leetcode.com/problems/two-sum/)| [Python](./1-100q/TwoSum.py)|Medium|

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