reading_label

2021

2021/09/251525.Number of Good Ways to Split a String
2021/09/251423.Maximum Points You Can Obtain from Cards
2021/09/251293.Shortest Path in a Grid with Obstacles Elimination
2021/09/251197.Minimum Knight Moves
2021/09/25735.Asteroid Collision
2021/09/24443.String Compression
2021/09/24724.Find Pivot Index
2021/09/24934.Shortest Bridge
2021/09/241048.Longest String Chain
2021/09/241559.Detect Cycles in 2D Grid
2021/09/24865.Smallest Subtree with all the Deepest Nodes
2021/09/211011.Capacity To Ship Packages Within D Days
2021/09/21843.Guess the Word
2021/09/21548.Split Array with Equal Sum
2021/09/211509.Minimum Difference Between Largest and Smallest Value in Three Moves
2021/09/211277.Count Square Submatrices with All Ones
2021/09/211161.Maximum Level Sum of a Binary Tree
2021/09/21359.Logger Rate Limiter
2021/09/21329.Longest Increasing Path in a Matrix
2021/09/20778.Swim in Rising Water
2021/09/201522.Diameter of N-Ary Tree
2021/09/20515.Find Largest Value in Each Tree Row
2021/09/20362.Design Hit Counter
2021/09/191868.Product of Two Run-Length Encoded Arrays
2021/09/19921.Minimum Add to Make Parentheses Valid
2021/09/181539.Kth Missing Positive Number
2021/09/181209.Remove All Adjacent Duplicates in String II
2021/09/181004.Max Consecutive Ones III
2021/09/18983.Minimum Cost For Tickets
2021/09/18658.Find K Closest Elements
2021/09/18266.Palindrome Permutation
2021/09/181216.Valid Palindrome III
2021/09/17691.Stickers to Spell Word
2021/09/171891.Cutting Ribbons
2021/09/17986.Interval List Intersections
2021/09/17509.Fibonacci Number
2021/09/17408.Valid Word Abbreviation
2021/09/17163. Missing Ranges
2021/09/16536. Construct Binary Tree from String
2021/09/16766. Toeplitz Matrix
2021/09/16317. Shortest Distance from All Buildings
2021/09/151344. Angle Between Hands of a Clock
2021/09/15670. Maximum Swap
2021/09/14282. Expression Add Operators
2021/09/14556. Next Greater Element III
2021/09/14503. Next Greater Element II
2021/09/14496. Next Greater Element I
2021/09/13708. Insert into a Sorted Circular Linked List
2021/09/13151. Reverse Words in a String
2021/09/121213. Intersection of Three Sorted Arrays
2021/08/24381. Insert Delete GetRandom O(1) - Duplicates allowed
2021/08/181636. Sort Array by Increasing Frequency
2021/08/17974. Subarray Sums Divisible by K
2021/08/12938. Range Sum of BST
2021/08/04498. Diagonal Traverse
2021/08/011235. Maximum Profit in Job Scheduling
2021/08/011229. Meeting Scheduler
2021/08/01759. Employee Free Time
2021/08/011359. Count All Valid Pickup and Delivery Options
2021/08/01323. Number of Connected Components in an Undirected Graph
2021/07/221779. Find Nearest Point That Has the Same X or Y Coordinate
2021/07/2012. Integer to Roman
2021/07/19156. Binary Tree Upside Down
2021/07/19101. Symmetric Tree
2021/07/18715. Range Module
2021/07/17730. Count Different Palindromic Subsequences
2021/07/16450. Delete Node in a BST
2021/07/14545. Boundary of Binary Tree
2021/07/14460. LFU Cache
2021/07/13373. Find K Pairs with Smallest Sums
2021/07/12744. Find Smallest Letter Greater Than Target
2021/07/11361. Bomb Enemy
2021/07/10465. Optimal Account Balancing
2021/07/09432. All O(1) Data Structure
2021/07/0836. Valid Sudoku
2021/07/07671. Second Minimum Node In a Binary Tree
2021/07/06367. Valid Perfect Square
2021/07/04802. Find Eventual Safe States
2021/07/03841. Keys and Rooms
2021/07/02265. Paint House II
2021/07/01256. Paint House
2021/06/3050. Pow(x, n)
2021/06/30605. Can Place Flowers
2021/06/29742. Closest Leaf in a Binary Tree
2021/06/2732. Longest Valid Parentheses
2021/06/26315. Count of Smaller Numbers After Self
2021/06/24576. Out of Boundary Paths
2021/06/22392. Is Subsequence
2021/06/22792. Number of Matching Subsequences
2021/06/18140. Word Break II
2021/06/141650. Lowest Common Ancestor of a Binary Tree III
2021/06/13827. Making A Large Island
2021/06/131762. Buildings With an Ocean View
2021/06/111263. Minimum Moves to Move a Box to Their Target Location
2021/06/09360. Sort Transformed Array
2021/06/0968. Text Justification
2021/06/08611. Valid Triangle Number
2021/06/08254. Factor Combinations
2021/06/07366. Find Leaves of Binary Tree
2021/06/07243. Shortest Word Distance
2021/06/02706. Design HashMap
2021/06/01218. The Skyline Problem
2021/05/311248. Count Number of Nice Subarrays
2021/05/271312. Minimum Insertion Steps to Make a String Palindrome
2021/05/26310. Minimum Height Trees
2021/05/25261. Graph Valid Tree
2021/05/241804. Implement Trie II (Prefix Tree)
2021/05/231871. Jump Game VII
2021/05/19398. Random Pick Index
2021/05/19528. Random Pick with Weight
2021/05/171570. Dot Product of Two Sparse Vectors
2021/05/161249. Minimum Remove to Make Valid Parentheses
2021/05/131428. Leftmost Column with at Least a One
2021/05/111396. Design Underground System
2021/05/11953. Verifying an Alien Dictionary
2021/05/11117. Populating Next Right Pointers in Each Node II
2021/05/11116. Populating Next Right Pointers in Each Node
2021/05/06122. Best Time to Buy and Sell Stock II
2021/05/04863. All Nodes Distance K in Binary Tree
2021/05/031448. Count Good Nodes in Binary Tree
2021/04/30394. Decode String
2021/04/30695. Max Area of Island
2021/04/28981. Time Based Key-Value Store
2021/04/27973. K Closest Points to Origin
2021/04/24355. Design Twitter
2021/04/21145. Binary Tree Postorder Traversal
2021/04/21144. Binary Tree Preorder Traversal
2021/04/1547. Permutations II
2021/04/09141. Linked List Cycle
2021/04/0894. Binary Tree Inorder Traversal
2021/04/06142. Linked List Cycle II
2021/04/0492. Reverse Linked List II
2021/04/0486. Partition List
2021/04/0382. Remove Duplicates from Sorted List II
2021/04/0261. Rotate List
2021/04/01234. Palindrome Linked List
2021/03/31235. Lowest Common Ancestor of a Binary Search Tree
2021/03/2470. Climbing Stairs
2021/03/211801. Number of Orders in the Backlog

2020

2020/08/19824. Goat Latin
2020/08/171103. Distribute Candies to People
2020/08/15435. Non-overlapping Intervals
2020/08/14409. Longest Palindrome
2020/08/131286. Iterator for Combination
2020/08/11274. H-Index
2020/08/10171. Excel Sheet Column Number
2020/08/09994. Rotting Oranges
2020/08/07987. Vertical Order Traversal of a Binary Tree
2020/08/04342. Power of Four
2020/08/02705. Design HashSet
2020/08/01520. Detect Capital
2020/05/1824. Swap Nodes in Pairs
2020/05/162. Add Two Numbers

2019

2019/05/08Java-Spring
2019/03/26find max path
2019/03/25947. Most Stones Removed with Same Row or Column
2019/03/25688. Knight Probability in Chessboard
2019/03/19685. Redundant Connection II
2019/03/18find max sibling layer
2019/03/14pair bike and pedestrian
2019/03/13log start
2019/03/10803. Bricks Falling When Hit
2019/03/10951. Flip Equivalent Binary Trees
2019/03/09777. Swap Adjacent in LR String
2019/03/08750. Number Of Corner Rectangles
2019/03/07497. Random Point in Non-overlapping Rectangles
2019/03/06939. Minimum Area Rectangle
2019/03/06833. Find And Replace in String
2019/03/04853. Car Fleet
2019/03/04855. Exam Room
2019/03/03890. Find and Replace Pattern
2019/03/02489. Robot Room Cleaner
2019/02/26design Elevator
2019/02/26239. Sliding Window Maximum
2019/02/22490. The Maze
2019/02/20857. Minimum Cost to Hire K Workers
2019/01/22904. Fruit Into Baskets
2019/01/20979. Distribute Coins in Binary Tree
2019/01/20978. Longest Turbulent Subarray
2019/01/20977. Squares of a Sorted Array
2019/01/1974. Search a 2D Matrix
2019/01/1862. Unique Paths
2019/01/0246. Permutations
2019/01/0243. Multiply Strings
2019/01/0141. First Missing Positive

2018

2018/12/3035. Search Insert Position
2018/12/3027. Remove Element
2018/12/3026. Remove Duplicates from Sorted Array
2018/12/2925. Reverse Nodes in k-Group
2018/12/2722. Generate Parentheses
2018/12/23962. Maximum Width Ramp
2018/12/2319. Remove Nth Node From End of List
2018/12/21929. Unique Email Addresses
2018/12/16958. Check Completeness of a Binary Tree
2018/12/04322. Coin Change
2018/12/04675. Cut Off Trees for Golf Event
2018/11/2014. Longest Common Prefix
2018/11/1911. Container With Most Water
2018/11/177. Reverse Integer
2018/11/176. ZigZag Conversion
2018/11/09212. Word Search II
2018/11/02811. Subdomain Visit Count
2018/11/01380. Insert Delete GetRandom O(1)
2018/10/31771. Jewels and Stones
2018/10/29692. Top K Frequent Words
2018/10/29103. Binary Tree Zigzag Level Order Traversal
2018/10/28930. Binary Subarrays With Sum
2018/10/26leetcode review
2018/10/25Leetcode category
2018/10/25909. Snakes and Ladders
2018/10/23547. Friend Circles
2018/10/22279. Perfect Squares
2018/10/2253. Maximum Subarray
2018/10/22918. Maximum Sum Circular Subarray
2018/10/19716. Max Stack
2018/10/19155. Min Stack
2018/10/18703. Kth Largest Element in a Stream
2018/10/08240. Search a 2D Matrix II
2018/10/08295. Find Median from Data Stream
2018/10/03146. LRU Cache
2018/10/01220. Contains Duplicate III
2018/10/01219. Contains Duplicate II
2018/10/01217. Contains Duplicate
2018/09/2171. Simplify Path
2018/09/21674. Longest Continuous Increasing Subsequence
2018/09/21210. Course Schedule II
2018/09/18272. Closest Binary Search Tree Value II
2018/09/17270. Closest Binary Search Tree Value
2018/09/05304. Range Sum Query 2D - Immutable
2018/09/03160. Intersection of Two Linked Lists
2018/09/03403. Frog Jump
2018/09/03Flatten a multilevel linked list
2018/09/03157. Read N Characters Given Read4
2018/09/02129. Sum Root to Leaf Numbers
2018/09/0130. Substring with Concatenation of All Words
2018/09/0123. Merge k Sorted Lists
2018/09/01399. Evaluate Division
2018/08/31491. Increasing Subsequences
2018/08/31636. Exclusive Time of Functions
2018/08/31429. N-ary Tree Level Order Traversal
2018/08/30251. Flatten 2D Vector
2018/08/30281. Zigzag Iterator
2018/08/29825. Friends Of Appropriate Ages
2018/08/29311. Sparse Matrix Multiplication
2018/08/29819. Most Common Word
2018/08/284. Median of Two Sorted Arrays
2018/08/27721. Accounts Merge
2018/08/2713. Roman to Integer
2018/08/2799. Recover Binary Search Tree
2018/08/2763. Unique Paths II
2018/08/27In-place conversion of Sorted DLL to Balanced BST
2018/08/2642. Trapping Rain Water
2018/08/26158. Read N Characters Given Read4 II - Call multiple times
2018/08/26128. Longest Consecutive Sequence
2018/08/26161. One Edit Distance
2018/08/26114. Flatten Binary Tree to Linked List
2018/08/25463. Island Perimeter
2018/08/25206. Reverse Linked List
2018/08/25252. Meeting Rooms
2018/08/2534. Find First and Last Position of Element in Sorted Array
2018/08/24269. Alien Dictionary
2018/08/2433. Search in Rotated Sorted Array
2018/08/23346. Moving Average from Data Stream
2018/08/23348. Design Tic-Tac-Toe
2018/08/23785. Is Graph Bipartite?
2018/08/23211. Add and Search Word - Data structure design
2018/08/23208. Implement Trie (Prefix Tree)
2018/08/2388. Merge Sorted Array
2018/08/23278. First Bad Version
2018/08/23325. Maximum Size Subarray Sum Equals k
2018/08/22277. Find the Celebrity
2018/08/22133. Clone Graph
2018/08/22791. Custom Sort String
2018/08/22125. Valid Palindrome
2018/08/22257. Binary Tree Paths
2018/08/22247. Strobogrammatic Number II
2018/08/22426. Convert Binary Search Tree to Sorted Doubly Linked List
2018/08/22124. Binary Tree Maximum Path Sum
2018/08/21560. Subarray Sum Equals K
2018/08/21543. Diameter of Binary Tree
2018/08/21349. Intersection of Two Arrays
2018/08/21215. Kth Largest Element in an Array
2018/08/21143. Reorder List
2018/08/21438. Find All Anagrams in a String
2018/08/2176. Minimum Window Substring
2018/08/21297. Serialize and Deserialize Binary Tree
2018/08/20309. Best Time to Buy and Sell Stock with Cooldown
2018/08/20121. Best Time to Buy and Sell Stock
2018/08/2067. Add Binary
2018/08/20283. Move Zeroes
2018/08/2029. Divide Two Integers
2018/08/19621. Task Scheduler
2018/08/19253. Meeting Rooms II
2018/08/1991. Decode Ways
2018/08/1865. Valid Number
2018/08/1810. Regular Expression Matching
2018/08/18680. Valid Palindrome II
2018/08/17314. Binary Tree Vertical Order Traversal
2018/08/17301. Remove Invalid Parentheses
2018/08/16273. Integer to English Words
2018/08/1617. Letter Combinations of a Phone Number
2018/08/15152. Maximum Product Subarray
2018/08/13516. Longest Palindromic Subsequence
2018/08/13647. Palindromic Substrings
2018/08/11227. Basic Calculator II
2018/08/10332. Reconstruct Itinerary
2018/08/08207. Course Schedule
2018/08/02402. Remove K Digits
2018/08/02767. Reorganize String
2018/08/02452. Minimum Number of Arrows to Burst Balloons
2018/08/01763. Partition Labels
2018/08/01232. Implement Queue using Stacks
2018/08/01439. Ternary Expression Parser
2018/08/01255. Verify Preorder Sequence in Binary Search Tree
2018/07/30131. Palindrome Partitioning
2018/07/3077. Combinations
2018/07/30306. Additive Number
2018/07/2989. Gray Code
2018/07/29784. Letter Case Permutation
2018/07/29401. Binary Watch
2018/07/27186. Reverse Words in a String II
2018/07/26350. Intersection of Two Arrays II
2018/07/2660. Permutation Sequence
2018/07/2637. Sudoku Solver
2018/07/25249. Group Shifted Strings
2018/07/25244. Shortest Word Distance II
2018/07/25739. Daily Temperatures
2018/07/25149. Max Points on a Line
2018/07/2557. Insert Interval
2018/07/24126. Word Ladder II
2018/07/24154. Find Minimum in Rotated Sorted Array II
2018/07/2356. Merge Intervals
2018/07/23238. Product of Array Except Self
2018/07/23123. Best Time to Buy and Sell Stock III
2018/07/2345. Jump Game II
2018/07/11199. Binary Tree Right Side View
2018/07/10230. Kth Smallest Element in a BST
2018/07/10173. Binary Search Tree Iterator
2018/07/10108. Convert Sorted Array to Binary Search Tree
2018/07/10110. Balanced Binary Tree
2018/07/10100. Same Tree
2018/07/10617. Merge Two Binary Trees
2018/07/10226. Invert Binary Tree
2018/07/09111. Minimum Depth of Binary Tree
2018/07/09437. Path Sum III
2018/07/09113. Path Sum II
2018/07/09112. Path Sum
2018/07/09222. Count Complete Tree Nodes
2018/07/06376. Wiggle Subsequence
2018/07/05698. Partition to K Equal Sum Subsets
2018/07/05416. Partition Equal Subset Sum
2018/07/01300. Longest Increasing Subsequence
2018/07/01343. Integer Break
2018/06/29264. Ugly Number II
2018/06/28307. Range Sum Query - Mutable
2018/06/28139. Word Break
2018/06/27337. House Robber III
2018/06/27213. House Robber II
2018/06/27198. House Robber
2018/06/265. Longest Palindromic Substring
2018/06/26339. Nested List Weight Sum
2018/06/26364. Nested List Weight Sum II
2018/06/21106. Construct Binary Tree from Inorder and Postorder Traversal
2018/06/20523. Continuous Subarray Sum
2018/06/2075. Sort Colors
2018/06/19119. Pascal's Triangle II
2018/06/19717. 1-bit and 2-bit Characters
2018/06/16236. Lowest Common Ancestor of a Binary Tree
2018/06/16654. Maximum Binary Tree
2018/06/14127. Word Ladder
2018/06/14200. Number of Islands
2018/06/14102. Binary Tree Level Order Traversal
2018/06/14179. Largest Number
2018/06/13406. Queue Reconstruction by Height
2018/06/13341. Flatten Nested List Iterator
2018/06/1398. Validate Binary Search Tree
2018/06/12150. Evaluate Reverse Polish Notation
2018/06/10241. Different Ways to Add Parentheses
2018/06/09319. Bulb Switcher
2018/06/098. String to Integer (atoi)
2018/06/08148. Sort List
2018/06/07347. Top K Frequent Elements
2018/06/0649. Group Anagrams
2018/06/06138. Copy List with Random Pointer
2018/06/06535. Encode and Decode TinyURL
2018/06/06340. Longest Substring with At Most K Distinct Characters
2018/06/06159. Longest Substring with At Most Two Distinct Characters
2018/06/063. Longest Substring Without Repeating Characters
2018/06/0518. 4Sum
2018/06/05162. Find Peak Element
2018/06/0590. Subsets II
2018/06/0578. Subsets
2018/06/05105. Construct Binary Tree from Preorder and Inorder Traversal
2018/06/04442. Find All Duplicates in an Array
2018/06/0464. Minimum Path Sum
2018/06/04377. Combination Sum IV
2018/06/04216. Combination Sum III
2018/06/0140. Combination Sum II
2018/06/0139. Combination Sum
2018/06/01289. Game of Life
2018/06/0131. Next Permutation
2018/05/3173. Set Matrix Zeroes
2018/05/3179. Word Search
2018/05/31287. Find the Duplicate Number
2018/05/30228. Summary Ranges
2018/05/30229. Majority Element II
2018/05/3059. Spiral Matrix II
2018/05/3054. Spiral Matrix
2018/05/2916. 3Sum Closest
2018/05/2981. Search in Rotated Sorted Array II
2018/05/25153. Find Minimum in Rotated Sorted Array
2018/05/2548. Rotate Image
2018/05/21369. Plus One Linked List
2018/05/19445. Add Two Numbers II
2018/05/1515. 3Sum
2018/05/14413. Arithmetic Slices
2018/05/14357. Count Numbers with Unique Digits
2018/05/1495. Unique Binary Search Trees II
2018/05/1396. Unique Binary Search Trees
2018/05/12221. Maximal Square
2018/05/1285. Maximal Rectangle
2018/05/1284. Largest Rectangle in Histogram
2018/05/1172. Edit Distance
2018/03/31LC24. Swap Nodes in Pairs
2018/03/29LC147. Insertion Sort List
2018/03/28LC148.Sort List