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981 files changed
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lines changed- Algorithms
- 0001. Two Sum
- 0002. Add Two Numbers
- 0003. Longest Substring Without Repeating Characters
- 0007. Reverse Integer
- 0011. Container With Most Water
- 0015. 3Sum
- 0016. 3Sum Closest
- 0017. Letter Combinations of a Phone Number
- 0018. 4Sum
- 0019. Remove Nth Node From End of List
- 0020. Valid-Parentheses
- 0021. Merge Two Sorted Lists
- 0022. Generate Parentheses
- 0023. Merge k Sorted Lists
- 0024. Swap Nodes in Pairs
- 0025. Reverse Nodes in k Group
- 0026. Remove Duplicates from Sorted Array
- 0027. Remove Element
- 0028. Implement strStr()
- 0030. Substring with Concatenation of All Words
- 0034. Find First and Last Position of Element in Sorted Array
- 0036. Valid Sudoku
- 0037. Sudoku Solver
- 0039. Combination Sum
- 0040. Combination Sum II
- 0041. First-Missing-Positive
- 0042. Trapping Rain Water
- 0046. Permutations
- 0047. Permutations II
- 0048. Rotate Image
- 0049. Group Anagrams
- 0050. Pow(x, n)
- 0051. N-Queens
- 0052. N-Queens II
- 0053. Maximum Subarray
- 0054. Spiral Matrix
- 0056. Merge Intervals
- 0057. Insert Interval
- 0059. Spiral Matrix II
- 0060. Permutation Sequence
- 0061. Rotate List
- 0062. Unique Paths
- 0063. Unique Paths II
- 0064. Minimum Path Sum
- 0069. Sqrt(x)
- 0070. Climbing Stairs
- 0071. Simplify Path
- 0075. Sort Colors
- 0076. Minimum Window Substring
- 0077. Combinations
- 0078. Subsets
- 0079. Word Search
- 0080. Remove Duplicates from Sorted Array II
- 0082. Remove Duplicates from Sorted List II
- 0083. Remove Duplicates from Sorted List
- 0084. Largest Rectangle in Histogram
- 0086. Partition List
- 0088. Merge-Sorted-Array
- 0089. Gray Code
- 0090. Subsets II
- 0091. Decode Ways
- 0092. Reverse Linked List II
- 0093. Restore IP Addresses
- 0094. Binary Tree Inorder Traversal
- 0095. Unique Binary Search Trees II
- 0096. Unique Binary Search Trees
- 0098. Validate Binary Search Tree
- 0099. Recover Binary Search Tree
- 0100. Same Tree
- 0101. Symmetric Tree
- 0102. Binary Tree Level Order Traversal
- 0103. Binary Tree Zigzag Level Order Traversal
- 0104. Maximum Depth of Binary Tree
- 0107. Binary Tree Level Order Traversal II
- 0108. Convert Sorted Array to Binary Search Tree
- 0109. Convert Sorted List to Binary Search Tree
- 0110. Balanced Binary Tree
- 0111. Minimum Depth of Binary Tree
- 0112. Path Sum
- 0113. Path Sum II
- 0114. Flatten Binary Tree to Linked List
- 0120. Triangle
- 0121. Best Time to Buy and Sell Stock
- 0122. Best Time to Buy and Sell Stock II
- 0124. Binary Tree Maximum Path Sum
- 0125. Valid-Palindrome
- 0126. Word Ladder II
- 0127. Word Ladder
- 0128. Longest Consecutive Sequence
- 0129. Sum Root to Leaf Numbers
- 0130. Surrounded Regions
- 0131. Palindrome Partitioning
- 0136. Single Number
- 0137. Single Number II
- 0141. Linked List Cycle
- 0142. Linked List Cycle II
- 0143. Reorder List
- 0144. Binary Tree Preorder Traversal
- 0145. Binary Tree Postorder Traversal
- 0147. Insertion Sort List
- 0148. Sort List
- 0150. Evaluate Reverse Polish Notation
- 0152. Maximum Product Subarray
- 0155. Min Stack
- 0160. Intersection of Two Linked Lists
- 0164. Maximum Gap
- 0167. Two Sum II - Input array is sorted
- 0169. Majority Element
- 0173. Binary Search Tree Iterator
- 0179. Largest Number
- 0187. Repeated DNA Sequences
- 0190. Reverse Bits
- 0191. Number of 1 Bits
- 0198. House Robber
- 0199. Binary Tree Right Side View
- 0200. Number of Islands
- 0201. Bitwise AND of Numbers Range
- 0202. Happy Number
- 0203. Remove Linked List Elements
- 0204. Count Primes
- 0205. Isomorphic Strings
- 0206. Reverse-Linked-List
- 0207. Course Schedule
- 0208. Implement Trie (Prefix Tree)
- 0209. Minimum Size Subarray Sum
- 0210. Course Schedule II
- 0211. Add and Search Word - Data structure design
- 0212. Word Search II
- 0213. House Robber II
- 0215. Kth Largest Element in an Array
- 0216. Combination Sum III
- 0217. Contains Duplicate
- 0219. Contains Duplicate II
- 0220. Contains Duplicate III
- 0222. Count Complete Tree Nodes
- 0224. Basic Calculator
- 0225. Implement Stack using Queues
- 0226. Invert Binary Tree
- 0229. Majority Element II
- 0230. Kth Smallest Element in a BST
- 0231. Power of Two
- 0232. Implement Queue using Stacks
- 0234. Palindrome Linked List
- 0235. Lowest Common Ancestor of a Binary Search Tree
- 0236. Lowest Common Ancestor of a Binary Tree
- 0237. Delete Node in a Linked List
- 0239. Sliding Window Maximum
- 0242. Valid Anagram
- 0257. Binary Tree Paths
- 0260. Single Number III
- 0263. Ugly Number
- 0268. Missing Number
- 0274. H-Index
- 0283. Move Zeroes
- 0287. Find the Duplicate Number
- 0290. Word Pattern
- 0300. Longest Increasing Subsequence
- 0306. Additive Number
- 0309. Best Time to Buy and Sell Stock with Cooldown
- 0318. Maximum Product of Word Lengths
- 0322. Coin Change
- 0324. Wiggle Sort II
- 0326. Power of Three
- 0328. Odd Even Linked List
- 0331. Verify Preorder Serialization of a Binary Tree
- 0338. Counting Bits
- 0342. Power of Four
- 0343. Integer Break
- 0344. Reverse String
- 0345. Reverse Vowels of a String
- 0347. Top K Frequent Elements
- 0349. Intersection of Two Arrays
- 0350. Intersection of Two Arrays II
- 0357. Count Numbers with Unique Digits
- 0371. Sum of Two Integers
- 0387. First Unique Character in a String
- 0389. Find the Difference
- 0392. Is Subsequence
- 0393. UTF-8 Validation
- 0394. Decode String
- 0397. Integer Replacement
- 0401. Binary Watch
- 0402. Remove K Digits
- 0404. Sum of Left Leaves
- 0405. Convert a Number to Hexadecimal
- 0409. Longest Palindrome
- 0412. Fizz Buzz
- 0414. Third Maximum Number
- 0416. Partition Equal Subset Sum
- 0421. Maximum XOR of Two Numbers in an Array
- 0424. Longest Repeating Character Replacement
- 0433. Minimum Genetic Mutation
- 0435. Non-overlapping Intervals
- 0437. Path Sum III
- 0438. Find All Anagrams in a String
- 0441. Arranging Coins
- 0445. Add Two Numbers II
- 0447. Number of Boomerangs
- 0451. Sort Characters By Frequency
- 0454. 4Sum II
- 0455. Assign Cookies
- 0456. 132 Pattern
- 0457. Circular Array Loop
- 0461. Hamming Distance
- 0463. Island Perimeter
- 0470. Implement Rand10() Using Rand7()
- 0476. Number Complement
- 0477. Total Hamming Distance
- 0480. Sliding Window Median
- 0496. Next Greater Element I
- 0500. Keyboard Row
- 0503. Next Greater Element II
- 0515. Find Largest Value in Each Tree Row
- 0524. Longest Word in Dictionary through Deleting
- 0526. Beautiful Arrangement
- 0532. K-diff Pairs in an Array
- 0541. Reverse String II
- 0542. 01 Matrix
- 0547. Friend Circles
- 0557. Reverse Words in a String III
- 0566. Reshape the Matrix
- 0567. Permutation in String
- 0572. Subtree of Another Tree
- 0575. Distribute Candies
- 0594. Longest Harmonious Subsequence
- 0599. Minimum Index Sum of Two Lists
- 0628. Maximum Product of Three Numbers
- 0636. Exclusive Time of Functions
- 0637. Average of Levels in Binary Tree
- 0645. Set Mismatch
- 0648. Replace Words
- 0676. Implement Magic Dictionary
- 0682. Baseball Game
- 0684. Redundant Connection
- 0685. Redundant Connection II
- 0693. Binary Number with Alternating Bits
- 0705. Design HashSet
- 0706. Design HashMap
- 0707. Design Linked List
- 0710. Random Pick with Blacklist
- 0713. Subarray Product Less Than K
- 0714. Best Time to Buy and Sell Stock with Transaction Fee
- 0717. 1-bit and 2-bit Characters
- 0720. Longest Word in Dictionary
- 0721. Accounts Merge
- 0725. Split Linked List in Parts
- 0726. Number of Atoms
- 0733. Flood Fill
- 0735. Asteroid Collision
- 0739. Daily Temperatures
- 0745. Prefix and Suffix Search
- 0746. Min Cost Climbing Stairs
- 0748. Shortest Completing Word
- 0756. Pyramid Transition Matrix
- 0762. Prime Number of Set Bits in Binary Representation
- 0763. Partition Labels
- 0766. Toeplitz Matrix
- 0767. Reorganize String
- 0771. Jewels and Stones
- 0778. Swim in Rising Water
- 0781. Rabbits in Forest
- 0784. Letter Case Permutation
- 0811. Subdomain Visit Count
- 0817. Linked List Components
- 0819. Most Common Word
- 0826. Most Profit Assigning Work
- 0828. Unique Letter String
- 0838. Push Dominoes
- 0839. Similar String Groups
- 0842. Split Array into Fibonacci Sequence
- 0844. Backspace String Compare
- 0845. Longest Mountain in Array
- 0853. Car Fleet
- 0856. Score of Parentheses
- 0867. Transpose Matrix
- 0876. Middle of the Linked List
- 0880. Decoded String at Index
- 0881. Boats to Save People
- 0884. Uncommon Words from Two Sentences
- 0885. Spiral Matrix III
- 0891. Sum of Subsequence Widths
- 0895. Maximum Frequency Stack
- 0898. Bitwise ORs of Subarrays
- 0901. Online Stock Span
- 0904. Fruit Into Baskets
- 0907. Sum of Subarray Minimums
- 0918. Maximum Sum Circular Subarray
- 0920. Number of Music Playlists
- 0921. Minimum Add to Make Parentheses Valid
- 0922. Sort Array By Parity II
- 0923. 3Sum With Multiplicity
- 0925. Long Pressed Name
- 0930. Binary Subarrays With Sum
- 0942. DI String Match
- 0946. Validate Stack Sequences
- 0947. Most Stones Removed with Same Row or Column
- 0953. Verifying an Alien Dictionary
- 0959. Regions Cut By Slashes
- 0961. N-Repeated Element in Size 2N Array
- 0969. Pancake Sorting
- 0970. Powerful Integers
- 0973. K Closest Points to Origin
- 0976. Largest Perimeter Triangle
- 0977. Squares of a Sorted Array
- 0980. Unique Paths III
- 0984. String Without AAA or BBB
- 0986. Interval List Intersections
- 0990. Satisfiability of Equality Equations
- 0992. Subarrays with K Different Integers
- 0993. Cousins in Binary Tree
- 0996. Number of Squareful Arrays
- 1002. Find Common Characters
- 1003. Check If Word Is Valid After Substitutions
- 1004. Max Consecutive Ones III
- 1005. Maximize Sum Of Array After K Negations
- 1017. Convert to Base -2
- 1019. Next Greater Node In Linked List
- 1021. Remove Outermost Parentheses
- 1025. Divisor Game
- 1030. Matrix Cells in Distance Order
- 1047. Remove All Adjacent Duplicates In String
- 1054. Distant Barcodes
- 1073. Adding Two Negabinary Numbers
- 1078. Occurrences After Bigram
- 1079. Letter Tile Possibilities
- 1093. Statistics from a Large Sample
- 1105. Filling Bookcase Shelves
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