Leetcode-Study-Plans

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Leetcode-Study-Plans

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Leetcode Study Plans: Programming Skills, Data Structure, Algorithm, Graph Theory and Dynamic Programming

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# Leetcode Study Plans

- [Programming Skills](https://github.com/rachna-ramkumar/Leetcode-Study-Plans/blob/main/index.md#programming-skills)
- [Data Structure](https://github.com/rachna-ramkumar/Leetcode-Study-Plans/blob/main/index.md#data-structure)
- [Algorithm](https://github.com/rachna-ramkumar/Leetcode-Study-Plans/blob/main/index.md#algorithm)
- [Graph Theory](https://github.com/rachna-ramkumar/Leetcode-Study-Plans/blob/main/index.md#graph-theory)
- [Dynamic Programming](https://github.com/rachna-ramkumar/Leetcode-Study-Plans/blob/main/index.md#dynamic-programming)
- [Binary Search](https://github.com/rachna-ramkumar/Leetcode-Study-Plans/blob/main/index.md#binary-search)

# Programming Skills

## Programming Skills I
1523. Count Odd Numbers in an Interval Range
1491. Average Salary Excluding the Minimum and Maximum Salary
191. Number of 1 Bits
1281. Subtract the Product and Sum of Digits of an Integer
976. Largest Perimeter Triangle
1779. Find Nearest Point That Has the Same X or Y Coordinate
1822. Sign of the Product of an Array
1502. Can Make Arithmetic Progression From Sequence
202. Happy Number
1790. Check if One String Swap Can Make Strings Equal
589. N-ary Tree Preorder Traversal
496. Next Greater Element I
1232. Check If It Is a Straight Line
1588. Sum of All Odd Length Subarrays
283. Move Zeroes
1672. Richest Customer Wealth
1572. Matrix Diagonal Sum
566. Reshape the Matrix
1768. Merge Strings Alternately
1678. Goal Parser Interpretation
389. Find the Difference
709. To Lower Case
1309. Decrypt String from Alphabet to Integer Mapping
953. Verifying an Alien Dictionary
1290. Convert Binary Number in a Linked List to Integer
876. Middle of the Linked List
104. Maximum Depth of Binary Tree
404. Sum of Left Leaves
1356. Sort Integers by The Number of 1 Bits
232. Implement Queue using Stacks
242. Valid Anagram
217. Contains Duplicate
1603. Design Parking System
303. Range Sum Query - Immutable

## Programming Skills II
896. Monotonic Array
28. Implement strStr()
110. Balanced Binary Tree
459. Repeated Substring Pattern
150. Evaluate Reverse Polish Notation
66. Plus One
1367. Linked List in Binary Tree
43. Multiply Strings
67. Add Binary
989. Add to Array-Form of Integer
739. Daily Temperatures
58. Length of Last Word
48. Rotate Image
1886. Determine Whether Matrix Can Be Obtained By Rotation
54. Spiral Matrix
973. K Closest Points to Origin
1630. Arithmetic Subarrays
429. N-ary Tree Level Order Traversal
503. Next Greater Element II
556. Next Greater Element III
1376. Time Needed to Inform All Employees
49. Group Anagrams
438. Find All Anagrams in a String
713. Subarray Product Less Than K
304. Range Sum Query 2D - Immutable
910. Smallest Range II
143. Reorder List
138. Copy List with Random Pointer
2. Add Two Numbers
445. Add Two Numbers II
61. Rotate List
173. Binary Search Tree Iterator
1845. Seat Reservation Manager
860. Lemonade Change
155. Min Stack
341. Flatten Nested List Iterator
1797. Design Authentication Manager
707. Design Linked List
380. Insert Delete GetRandom O(1)
622. Design Circular Queue
729. My Calendar I

## Programming Skills III
1634. Add Two Polynomials Represented as Linked Lists
369. Plus One Linked List
1836. Remove Duplicates From an Unsorted Linked List
426. Convert Binary Search Tree to Sorted Doubly Linked List
325. Maximum Size Subarray Sum Equals k
209. Minimum Size Subarray Sum
525. Contiguous Array
1798. Maximum Number of Consecutive Values You Can Make
255. Verify Preorder Sequence in Binary Search Tree
224. Basic Calculator
901. Online Stock Span
241. Different Ways to Add Parentheses
449. Serialize and Deserialize BST
8. String to Integer (atoi)
148. Sort List
23. Merge k Sorted Lists
708. Insert into a Sorted Circular Linked List
282. Expression Add Operators
227. Basic Calculator II
772. Basic Calculator III
641. Design Circular Deque
1352. Product of the Last K Numbers
1597. Build Binary Expression Tree From Infix Expression
214. Shortest Palindrome
65. Valid Number
208. Implement Trie (Prefix Tree)
1804. Implement Trie II (Prefix Tree)
642. Design Search Autocomplete System
295. Find Median from Data Stream
895. Maximum Frequency Stack
146. LRU Cache
211. Design Add and Search Words Data Structure
297. Serialize and Deserialize Binary Tree
281. Zigzag Iterator
348. Design Tic-Tac-Toe
1166. Design File System
1586. Binary Search Tree Iterator II
1570. Dot Product of Two Sparse Vectors
1244. Design A Leaderboard
1628. Design an Expression Tree With Evaluate Function
460. LFU Cache
244. Shortest Word Distance II
353. Design Snake Game
251. Flatten 2D Vector
1622. Fancy Sequence
855. Exam Room
635. Design Log Storage System
631. Design Excel Sum Formula
307. Range Sum Query - Mutable
535. Encode and Decode TinyURL
431. Encode N-ary Tree to Binary Tree
381. Insert Delete GetRandom O(1) - Duplicates allowed
1396. Design Underground System
715. Range Module

# Data Structure

## Data Structure I
217. Contains Duplicate	
53. Maximum Subarray	
1. Two Sum	
88. Merge Sorted Array	
350. Intersection of Two Arrays II	
121. Best Time to Buy and Sell Stock	
566. Reshape the Matrix	
118. Pascal's Triangle	
36. Valid Sudoku	
74. Search a 2D Matrix	
387. First Unique Character in a String	
383. Ransom Note	
242. Valid Anagram	
141. Linked List Cycle	
21. Merge Two Sorted Lists	
203. Remove Linked List Elements	
206. Reverse Linked List	
83. Remove Duplicates from Sorted List	
20. Valid Parentheses	
232. Implement Queue using Stacks	
144. Binary Tree Preorder Traversal	
94. Binary Tree Inorder Traversal	
145. Binary Tree Postorder Traversal	
102. Binary Tree Level Order Traversal	
104. Maximum Depth of Binary Tree	
101. Symmetric Tree	
226. Invert Binary Tree	
112. Path Sum	
700. Search in a Binary Search Tree	
701. Insert into a Binary Search Tree	
98. Validate Binary Search Tree	
653. Two Sum IV - Input is a BST	
235. Lowest Common Ancestor of a Binary Search Tree

## Data Structure II
136. Single Number
169. Majority Element
15. 3Sum
75. Sort Colors
56. Merge Intervals
706. Design HashMap
119. Pascal's Triangle II
48. Rotate Image
59. Spiral Matrix II
240. Search a 2D Matrix II
435. Non-overlapping Intervals
334. Increasing Triplet Subsequence
238. Product of Array Except Self
560. Subarray Sum Equals K
415. Add Strings
409. Longest Palindrome
290. Word Pattern
763. Partition Labels
49. Group Anagrams
43. Multiply Strings
187. Repeated DNA Sequences
5. Longest Palindromic Substring
2. Add Two Numbers
142. Linked List Cycle II
160. Intersection of Two Linked Lists
82. Remove Duplicates from Sorted List II
24. Swap Nodes in Pairs
707. Design Linked List
25. Reverse Nodes in k-Group
143. Reorder List
155. Min Stack
1249. Minimum Remove to Make Valid Parentheses
1823. Find the Winner of the Circular Game
108. Convert Sorted Array to Binary Search Tree
105. Construct Binary Tree from Preorder and Inorder Traversal
103. Binary Tree Zigzag Level Order Traversal
199. Binary Tree Right Side View
113. Path Sum II
450. Delete Node in a BST
230. Kth Smallest Element in a BST
173. Binary Search Tree Iterator
236. Lowest Common Ancestor of a Binary Tree
297. Serialize and Deserialize Binary Tree
997. Find the Town Judge
1557. Minimum Number of Vertices to Reach All Nodes
841. Keys and Rooms
215. Kth Largest Element in an Array
347. Top K Frequent Elements
451. Sort Characters By Frequency
973. K Closest Points to Origin

## Data Structure III
325. Maximum Size Subarray Sum Equals k
1151. Minimum Swaps to Group All 1's Together
1588. Sum of All Odd Length Subarrays
452. Minimum Number of Arrows to Burst Balloons
128. Longest Consecutive Sequence
454. 4Sum II
448. Find All Numbers Disappeared in an Array
1427. Perform String Shifts
409. Longest Palindrome
187. Repeated DNA Sequences
5. Longest Palindromic Substring
44. Wildcard Matching
214. Shortest Palindrome
1634. Add Two Polynomials Represented as Linked Lists
369. Plus One Linked List
148. Sort List
138. Copy List with Random Pointer
430. Flatten a Multilevel Doubly Linked List
281. Zigzag Iterator
394. Decode String
739. Daily Temperatures
42. Trapping Rain Water
402. Remove K Digits
456. 132 Pattern
84. Largest Rectangle in Histogram
862. Shortest Subarray with Sum at Least K
1602. Find Nearest Right Node in Binary Tree
1469. Find All The Lonely Nodes
1522. Diameter of N-Ary Tree
337. House Robber III
1325. Delete Leaves With a Given Value
366. Find Leaves of Binary Tree
124. Binary Tree Maximum Path Sum
968. Binary Tree Cameras
886. Possible Bipartition
787. Cheapest Flights Within K Stops
261. Graph Valid Tree
547. Number of Provinces
990. Satisfiability of Equality Equations
1319. Number of Operations to Make Network Connected
305. Number of Islands II
1579. Remove Max Number of Edges to Keep Graph Fully Traversable
323. Number of Connected Components in an Undirected Graph
1101. The Earliest Moment When Everyone Become Friends
253. Meeting Rooms II
23. Merge k Sorted Lists
378. Kth Smallest Element in a Sorted Matrix
295. Find Median from Data Stream
358. Rearrange String k Distance Apart
759. Employee Free Time
218. The Skyline Problem
1756. Design Most Recently Used Queue
729. My Calendar I
1606. Find Servers That Handled Most Number of Requests
208. Implement Trie (Prefix Tree)
211. Design Add and Search Words Data Structure
1858. Longest Word With All Prefixes
212. Word Search II
336. Palindrome Pairs
642. Design Search Autocomplete System

# Algorithm

## Algorithm I
704. Binary Search
278. First Bad Version
35. Search Insert Position
977. Squares of a Sorted Array
189. Rotate Array
283. Move Zeroes
167. Two Sum II - Input Array Is Sorted
344. Reverse String
557. Reverse Words in a String III
876. Middle of the Linked List
19. Remove Nth Node From End of List
3. Longest Substring Without Repeating Characters
567. Permutation in String
733. Flood Fill
695. Max Area of Island
617. Merge Two Binary Trees
116. Populating Next Right Pointers in Each Node
542. 01 Matrix
994. Rotting Oranges
21. Merge Two Sorted Lists
206. Reverse Linked List
77. Combinations
46. Permutations
784. Letter Case Permutation
70. Climbing Stairs
198. House Robber
120. Triangle
231. Power of Two
191. Number of 1 Bits
190. Reverse Bits
136. Single Number

## Algorithm II
34. Find First and Last Position of Element in Sorted Array
33. Search in Rotated Sorted Array
74. Search a 2D Matrix
153. Find Minimum in Rotated Sorted Array
162. Find Peak Element
82. Remove Duplicates from Sorted List II
15. 3Sum
844. Backspace String Compare
986. Interval List Intersections
11. Container With Most Water
438. Find All Anagrams in a String
713. Subarray Product Less Than K
209. Minimum Size Subarray Sum
200. Number of Islands
547. Number of Provinces
117. Populating Next Right Pointers in Each Node II
572. Subtree of Another Tree
1091. Shortest Path in Binary Matrix
130. Surrounded Regions
797. All Paths From Source to Target
78. Subsets
90. Subsets II
47. Permutations II
39. Combination Sum
40. Combination Sum II
17. Letter Combinations of a Phone Number
22. Generate Parentheses
79. Word Search
213. House Robber II
55. Jump Game
45. Jump Game II
62. Unique Paths
5. Longest Palindromic Substring
413. Arithmetic Slices
91. Decode Ways
139. Word Break
300. Longest Increasing Subsequence
673. Number of Longest Increasing Subsequence
1143. Longest Common Subsequence
583. Delete Operation for Two Strings
72. Edit Distance
322. Coin Change
343. Integer Break
201. Bitwise AND of Numbers Range
384. Shuffle an Array
202. Happy Number
149. Max Points on a Line

## Algorithm III
1060. Missing Element in Sorted Array
1901. Find a Peak Element II
1231. Divide Chocolate
1182. Shortest Distance to Target Color
1229. Meeting Scheduler
287. Find the Duplicate Number
42. Trapping Rain Water
1868. Product of Two Run-Length Encoded Arrays
159. Longest Substring with At Most Two Distinct Characters
340. Longest Substring with At Most K Distinct Characters
1004. Max Consecutive Ones III
239. Sliding Window Maximum
76. Minimum Window Substring
286. Walls and Gates
417. Pacific Atlantic Water Flow
1469. Find All The Lonely Nodes
582. Kill Process
863. All Nodes Distance K in Binary Tree
752. Open the Lock
1319. Number of Operations to Make Network Connected
1368. Minimum Cost to Make at Least One Valid Path in a Grid
1192. Critical Connections in a Network
254. Factor Combinations
394. Decode String
51. N-Queens
37. Sudoku Solver
10. Regular Expression Matching
241. Different Ways to Add Parentheses
301. Remove Invalid Parentheses
489. Robot Room Cleaner
53. Maximum Subarray
4. Median of Two Sorted Arrays
315. Count of Smaller Numbers After Self
309. Best Time to Buy and Sell Stock with Cooldown
714. Best Time to Buy and Sell Stock with Transaction Fee
410. Split Array Largest Sum
337. House Robber III
221. Maximal Square
85. Maximal Rectangle
486. Predict the Winner
131. Palindrome Partitioning
132. Palindrome Partitioning II
416. Partition Equal Subset Sum
983. Minimum Cost For Tickets
123. Best Time to Buy and Sell Stock III
174. Dungeon Game
207. Course Schedule
210. Course Schedule II
310. Minimum Height Trees
329. Longest Increasing Path in a Matrix
1136. Parallel Courses
269. Alien Dictionary
260. Single Number III
864. Shortest Path to Get All Keys
995. Minimum Number of K Consecutive Bit Flips
1396. Design Underground System
146. LRU Cache
981. Time Based Key-Value Store
715. Range Module
460. LFU Cache

# Graph Theory

## Graph Theory I
733. Flood Fill	
200. Number of Islands	
695. Max Area of Island	
1254. Number of Closed Islands	
1020. Number of Enclaves	
1905. Count Sub Islands	
1162. As Far from Land as Possible	
417. Pacific Atlantic Water Flow	
1091. Shortest Path in Binary Matrix	
542. 01 Matrix	
934. Shortest Bridge	
1926. Nearest Exit from Entrance in Maze	
797. All Paths From Source to Target	
841. Keys and Rooms	
547. Number of Provinces	
1319. Number of Operations to Make Network Connected	
1376. Time Needed to Inform All Employees	
802. Find Eventual Safe States	
1129. Shortest Path with Alternating Colors	
1466. Reorder Routes to Make All Paths Lead to the City Zero	
847. Shortest Path Visiting All Nodes	
1306. Jump Game III	
1654. Minimum Jumps to Reach Home	
365. Water and Jug Problem	
433. Minimum Genetic Mutation	
752. Open the Lock	
127. Word Ladder	
997. Find the Town Judge	
1557. Minimum Number of Vertices to Reach All Nodes	
1615. Maximal Network Rank	
886. Possible Bipartition	
785. Is Graph Bipartite?

## Graph Theory II
261. Graph Valid Tree
684. Redundant Connection
685. Redundant Connection II
1579. Remove Max Number of Edges to Keep Graph Fully Traversable
1101. The Earliest Moment When Everyone Become Friends
990. Satisfiability of Equality Equations
1061. Lexicographically Smallest Equivalent String
737. Sentence Similarity II
1258. Synonymous Sentences
1202. Smallest String With Swaps
721. Accounts Merge
839. Similar String Groups
305. Number of Islands II
924. Minimize Malware Spread
928. Minimize Malware Spread II
1627. Graph Connectivity With Threshold
1697. Checking Existence of Edge Length Limited Paths
352. Data Stream as Disjoint Intervals
207. Course Schedule
210. Course Schedule II
310. Minimum Height Trees
1136. Parallel Courses
269. Alien Dictionary
1857. Largest Color Value in a Directed Graph
1591. Strange Printer II
1203. Sort Items by Groups Respecting Dependencies
1135. Connecting Cities With Minimum Cost
1584. Min Cost to Connect All Points
1168. Optimize Water Distribution in a Village
778. Swim in Rising Water
1489. Find Critical and Pseudo-Critical Edges in Minimum Spanning Tree
787. Cheapest Flights Within K Stops
1631. Path With Minimum Effort
1514. Path with Maximum Probability
1928. Minimum Cost to Reach Destination in Time
1368. Minimum Cost to Make at Least One Valid Path in a Grid
743. Network Delay Time
505. The Maze II
499. The Maze III
1334. Find the City With the Smallest Number of Neighbors at a Threshold Distance
1462. Course Schedule IV
1786. Number of Restricted Paths From First to Last Node
323. Number of Connected Components in an Undirected Graph
490. The Maze
317. Shortest Distance from All Buildings
1263. Minimum Moves to Move a Box to Their Target Location
1345. Jump Game IV
864. Shortest Path to Get All Keys
913. Cat and Mouse
694. Number of Distinct Islands
834. Sum of Distances in Tree
1494. Parallel Courses II
1192. Critical Connections in a Network

# Dynamic Programming

## Dynamic Programming I
509. Fibonacci Number
1137. N-th Tribonacci Number
70. Climbing Stairs
746. Min Cost Climbing Stairs
198. House Robber
213. House Robber II
740. Delete and Earn
55. Jump Game
45. Jump Game II
53. Maximum Subarray
918. Maximum Sum Circular Subarray
152. Maximum Product Subarray
1567. Maximum Length of Subarray With Positive Product
1014. Best Sightseeing Pair
121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II
309. Best Time to Buy and Sell Stock with Cooldown
714. Best Time to Buy and Sell Stock with Transaction Fee
139. Word Break
42. Trapping Rain Water
413. Arithmetic Slices
91. Decode Ways
264. Ugly Number II
96. Unique Binary Search Trees
118. Pascal's Triangle
119. Pascal's Triangle II
931. Minimum Falling Path Sum
120. Triangle
1314. Matrix Block Sum
304. Range Sum Query 2D - Immutable
62. Unique Paths
63. Unique Paths II
64. Minimum Path Sum
221. Maximal Square
5. Longest Palindromic Substring
516. Longest Palindromic Subsequence
300. Longest Increasing Subsequence
376. Wiggle Subsequence
392. Is Subsequence
1143. Longest Common Subsequence
72. Edit Distance
322. Coin Change
518. Coin Change 2
377. Combination Sum IV
343. Integer Break
279. Perfect Squares

## Dynamic Programming II
509. Fibonacci Number	
70. Climbing Stairs	
746. Min Cost Climbing Stairs	
53. Maximum Subarray	
198. House Robber	
213. House Robber II	
256. Paint House	
265. Paint House II	
121. Best Time to Buy and Sell Stock	
714. Best Time to Buy and Sell Stock with Transaction Fee	
309. Best Time to Buy and Sell Stock with Cooldown	
152. Maximum Product Subarray	
487. Max Consecutive Ones II	
376. Wiggle Subsequence	
1746. Maximum Subarray Sum After One Operation	
1230. Toss Strange Coins	
1143. Longest Common Subsequence	
1035. Uncrossed Lines	
712. Minimum ASCII Delete Sum for Two Strings	
300. Longest Increasing Subsequence	
673. Number of Longest Increasing Subsequence	
1048. Longest String Chain	
646. Maximum Length of Pair Chain	
368. Largest Divisible Subset	
647. Palindromic Substrings	
5. Longest Palindromic Substring	
1055. Shortest Way to Form String	
516. Longest Palindromic Subsequence	
64. Minimum Path Sum	
562. Longest Line of Consecutive One in Matrix	
1182. Shortest Distance to Target Color	
343. Integer Break	
238. Product of Array Except Self	
139. Word Break	
254. Factor Combinations	
329. Longest Increasing Path in a Matrix	
62. Unique Paths	
63. Unique Paths II	
576. Out of Boundary Paths	
650. 2 Keys Keyboard	
361. Bomb Enemy	
96. Unique Binary Search Trees	
1130. Minimum Cost Tree From Leaf Values	
322. Coin Change	
518. Coin Change 2	
39. Combination Sum	
279. Perfect Squares	
416. Partition Equal Subset Sum	
494. Target Sum

## Dynamic Programming III
1884. Egg Drop With 2 Eggs and N Floors
887. Super Egg Drop
123. Best Time to Buy and Sell Stock III
188. Best Time to Buy and Sell Stock IV
1751. Maximum Number of Events That Can Be Attended II
1235. Maximum Profit in Job Scheduling
1259. Handshakes That Don't Cross
1478. Allocate Mailboxes
115. Distinct Subsequences
435. Non-overlapping Intervals
452. Minimum Number of Arrows to Burst Balloons
72. Edit Distance
1682. Longest Palindromic Subsequence II
1062. Longest Repeating Substring
1092. Shortest Common Supersequence
10. Regular Expression Matching
1216. Valid Palindrome III
727. Minimum Window Subsequence
741. Cherry Pickup
1463. Cherry Pickup II
140. Word Break II
351. Android Unlock Patterns
688. Knight Probability in Chessboard
750. Number Of Corner Rectangles
651. 4 Keys Keyboard
634. Find the Derangement of An Array
1692. Count Ways to Distribute Candies
418. Sentence Screen Fitting
312. Burst Balloons
1246. Palindrome Removal
40. Combination Sum II
983. Minimum Cost For Tickets
1049. Last Stone Weight II
879. Profitable Schemes
486. Predict the Winner
1406. Stone Game III
1510. Stone Game IV
464. Can I Win
1140. Stone Game II
698. Partition to K Equal Sum Subsets
1066. Campus Bikes II
1434. Number of Ways to Wear Different Hats to Each Other
902. Numbers At Most N Given Digit Set
600. Non-negative Integers without Consecutive Ones
1067. Digit Count in Range
298. Binary Tree Longest Consecutive Sequence
549. Binary Tree Longest Consecutive Sequence II
333. Largest BST Subtree
1273. Delete Tree Nodes
568. Maximum Vacation Days

## Dynamic Programming IV
123. Best Time to Buy and Sell Stock III
188. Best Time to Buy and Sell Stock IV
1751. Maximum Number of Events That Can Be Attended II
1235. Maximum Profit in Job Scheduling
1259. Handshakes That Don't Cross
1478. Allocate Mailboxes
32. Longest Valid Parentheses
1105. Filling Bookcase Shelves
1277. Count Square Submatrices with All Ones
361. Bomb Enemy
1155. Number of Dice Rolls With Target Sum
1269. Number of Ways to Stay in the Same Place After Some Steps
1575. Count All Possible Routes
1639. Number of Ways to Form a Target String Given a Dictionary
940. Distinct Subsequences II
1866. Number of Ways to Rearrange Sticks With K Sticks Visible
1420. Build Array Where You Can Find The Maximum Exactly K Comparisons
688. Knight Probability in Chessboard
837. New 21 Game
1547. Minimum Cost to Cut a Stick
1312. Minimum Insertion Steps to Make a String Palindrome
1278. Palindrome Partitioning III
1000. Minimum Cost to Merge Stones
664. Strange Printer
546. Remove Boxes
294. Flip Game II
1406. Stone Game III
1510. Stone Game IV
1140. Stone Game II
526. Beautiful Arrangement
1879. Minimum XOR Sum of Two Arrays
980. Unique Paths III
847. Shortest Path Visiting All Nodes
1125. Smallest Sufficient Team
691. Stickers to Spell Word
1655. Distribute Repeating Integers
1349. Maximum Students Taking Exam
1434. Number of Ways to Wear Different Hats to Each Other
1799. Maximize Score After N Operations
1815. Maximum Number of Groups Getting Fresh Donuts
1012. Numbers With Repeated Digits
1067. Digit Count in Range
865. Smallest Subtree with all the Deepest Nodes
1372. Longest ZigZag Path in a Binary Tree
894. All Possible Full Binary Trees
337. House Robber III
124. Binary Tree Maximum Path Sum
1130. Minimum Cost Tree From Leaf Values
968. Binary Tree Cameras
1483. Kth Ancestor of a Tree Node
1425. Constrained Subsequence Sum
446. Arithmetic Slices II - Subsequence
975. Odd Even Jump
1687. Delivering Boxes from Storage to Ports
1055. Shortest Way to Form String
174. Dungeon Game
514. Freedom Trail
1473. Paint House III
471. Encode String with Shortest Length
1240. Tiling a Rectangle with the Fewest Squares

# Binary Search

## Binary Search I
704. Binary Search
374. Guess Number Higher or Lower
35. Search Insert Position
852. Peak Index in a Mountain Array
367. Valid Perfect Square
1385. Find the Distance Value Between Two Arrays
69. Sqrt(x)
744. Find Smallest Letter Greater Than Target
278. First Bad Version
34. Find First and Last Position of Element in Sorted Array
441. Arranging Coins
1539. Kth Missing Positive Number
167. Two Sum II - Input Array Is Sorted
1608. Special Array With X Elements Greater Than or Equal X
1351. Count Negative Numbers in a Sorted Matrix
74. Search a 2D Matrix
1337. The K Weakest Rows in a Matrix
1346. Check If N and Its Double Exist
350. Intersection of Two Arrays II
633. Sum of Square Numbers
1855. Maximum Distance Between a Pair of Values
33. Search in Rotated Sorted Array
153. Find Minimum in Rotated Sorted Array

## Binary Search II
209. Minimum Size Subarray Sum
611. Valid Triangle Number
658. Find K Closest Elements
1894. Find the Student that Will Replace the Chalk
300. Longest Increasing Subsequence
1760. Minimum Limit of Balls in a Bag
875. Koko Eating Bananas
1552. Magnetic Force Between Two Balls
287. Find the Duplicate Number
1283. Find the Smallest Divisor Given a Threshold
1898. Maximum Number of Removable Characters
1870. Minimum Speed to Arrive on Time
1482. Minimum Number of Days to Make m Bouquets
1818. Minimum Absolute Sum Difference
240. Search a 2D Matrix II
275. H-Index II
1838. Frequency of the Most Frequent Element
540. Single Element in a Sorted Array
222. Count Complete Tree Nodes
1712. Ways to Split Array Into Three Subarrays
826. Most Profit Assigning Work
436. Find Right Interval
81. Search in Rotated Sorted Array II
162. Find Peak Element
154. Find Minimum in Rotated Sorted Array II
528. Random Pick with Weight
1508. Range Sum of Sorted Subarray Sums
1574. Shortest Subarray to be Removed to Make Array Sorted
1292. Maximum Side Length of a Square with Sum Less than or Equal to Threshold
1498. Number of Subsequences That Satisfy the Given Sum Condition
981. Time Based Key-Value Store
1300. Sum of Mutated Array Closest to Target
1802. Maximum Value at a Given Index in a Bounded Array
1901. Find a Peak Element II
1146. Snapshot Array
1488. Avoid Flood in The City
1562. Find Latest Group of Size M
1648. Sell Diminishing-Valued Colored Balls
1201. Ugly Number III
911. Online Election

## Binary Search III
1213. Intersection of Three Sorted Arrays
1099. Two Sum Less Than K
1150. Check If a Number Is Majority Element in a Sorted Array
1428. Leftmost Column with at Least a One
702. Search in a Sorted Array of Unknown Size
1011. Capacity To Ship Packages Within D Days
1533. Find the Index of the Large Integer
1060. Missing Element in Sorted Array
270. Closest Binary Search Tree Value
1231. Divide Chocolate
1891. Cutting Ribbons
1885. Count Pairs in Two Arrays
1618. Maximum Font to Fit a Sentence in a Screen
793. Preimage Size of Factorial Zeroes Function
1198. Find Smallest Common Element in All Rows
668. Kth Smallest Number in Multiplication Table
719. Find K-th Smallest Pair Distance
1751. Maximum Number of Events That Can Be Attended II
1671. Minimum Number of Removals to Make Mountain Array
786. K-th Smallest Prime Fraction
1182. Shortest Distance to Target Color
1793. Maximum Score of a Good Subarray
1095. Find in Mountain Array
4. Median of Two Sorted Arrays
1235. Maximum Profit in Job Scheduling
1713. Minimum Operations to Make a Subsequence
1439. Find the Kth Smallest Sum of a Matrix With Sorted Rows
1847. Closest Room
363. Max Sum of Rectangle No Larger Than K
1862. Sum of Floored Pairs
644. Maximum Average Subarray II
1889. Minimum Space Wasted From Packaging
710. Random Pick with Blacklist
352. Data Stream as Disjoint Intervals
778. Swim in Rising Water
378. Kth Smallest Element in a Sorted Matrix
774. Minimize Max Distance to Gas Station
1187. Make Array Strictly Increasing
1062. Longest Repeating Substring
1044. Longest Duplicate Substring
718. Maximum Length of Repeated Subarray
887. Super Egg Drop
1521. Find a Value of a Mysterious Function Closest to Target
1157. Online Majority Element In Subarray
302. Smallest Rectangle Enclosing Black Pixels
1631. Path With Minimum Effort
1782. Count Pairs Of Nodes

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