Page Index - jiejackyzhang/leetcode-note GitHub Wiki

709 page(s) in this GitHub Wiki:

• Home
• 1. Two Sum
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• 10. Regular Expression Matching
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• 100. Same Tree
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• 101. Symmetric Tree
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• 102. Binary Tree Level Order Traversal
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• 103. Binary Tree Zigzag Level Order Traversal
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• 104. Maximum Depth of Binary Tree
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• 105. Construct Binary Tree from Preorder and Inorder Traversal
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• 106. Construct Binary Tree from Inorder and Postorder Traversal
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• 107. Binary Tree Level Order Traversal II
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• 108. Convert Sorted Array to Binary Search Tree
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• 109. Convert Sorted List to Binary Search Tree
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• 11. Container With Most Water
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• 110. Balanced Binary Tree
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• 111. Minimum Depth of Binary Tree
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• 112. Path Sum
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• 113. Path Sum II
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• 114. Flatten Binary Tree to Linked List
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• 115. Distinct Subsequences
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• 116. Populating Next Right Pointers in Each Node
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• 117. Populating Next Right Pointers in Each Node II
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• 118. Pascal's Triangle
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• 119. Pascal's Triangle II
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• 12. Integer to Roman
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• 120. Triangle
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• 121. Best Time to Buy and Sell Stock
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• 122. Best Time to Buy and Sell Stock II
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• 123. Best Time to Buy and Sell Stock III
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• 124. Binary Tree Maximum Path Sum
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• 125. Valid Palindrome
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• 126. Word Ladder II
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• 127. Word Ladder
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• 128. Longest Consecutive Sequence
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• 129. Sum Root to Leaf Numbers
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• 13. Roman to Integer
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• 130. Surrounded Regions
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• 131. Palindrome Partitioning
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• 132. Palindrome Partitioning II
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• 133. Clone Graph
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• 134. Gas Station
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• 135. Candy
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• 136. Single Number
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• 137. Single Number II
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• 138. Copy List with Random Pointer
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• 139. Word Break
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• 14. Longest Common Prefix
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• 140. Word Break II
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• 141. Linked List Cycle
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• 142. Linked List Cycle II
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• 143. Reorder List
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• 144. Binary Tree Preorder Traversal
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• 145. Binary Tree Postorder Traversal
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• 146. LRU Cache
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• 147. Insertion Sort List
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• 148. Sort List
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• 149. Max Points on a Line
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• 15. 3Sum
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• 150. Evaluate Reverse Polish Notation
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• 151. Reverse Words in a String
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• 152. Maximum Product Subarray
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• 153. Find Minimum in Rotated Sorted Array
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• 154. Find Minimum in Rotated Sorted Array II
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• 155. Min Stack
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• 157. Read N Characters Given Read4
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• 158. Read N Characters Given Read4 II Call multiple times
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• 159. Longest Substring with At Most Two Distinct Characters
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• 16. 3Sum Closest
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• 160. Intersection of Two Linked Lists
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• 162. Find Peak Element
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• 163. Missing Ranges
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• 164. Maximum Gap
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• 165. Compare Version Numbers
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• 166. Fraction to Recurring Decimal
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• 167. Two Sum II Input array is sorted
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• 168. Excel Sheet Column Title
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• 169. Majority Element
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• 17. Letter Combinations of a Phone Number
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• 171. Excel Sheet Column Number
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• 172. Factorial Trailing Zeroes
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• 173. Binary Search Tree Iterator
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• 174. Dungeon Game
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• 179. Largest Number
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• 18. 4Sum
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• 187. Repeated DNA Sequences
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• 188. Best Time to Buy and Sell Stock IV
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• 189. Rotate Array
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• 19. Remove Nth Node From End of List
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• 190. Reverse Bits
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• 191. Number of 1 Bits
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• 198. House Robber
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• 199. Binary Tree Right Side View
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• 2. Add Two Numbers
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• 20. Valid Parentheses
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• 200. Number of Islands
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• 201. Bitwise AND of Numbers Range
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• 202. Happy Number
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• 203. Remove Linked List Elements
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• 204. Count Primes
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• 205. Isomorphic Strings
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• 206. Reverse Linked List
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• 207. Course Schedule
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• 208. Implement Trie (Prefix Tree)
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• 209. Minimum Size Subarray Sum
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• 21. Merge Two Sorted Lists
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• 210. Course Schedule II
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• 211. Add and Search Word Data structure design
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• 212. Word Search II
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• 213. House Robber II
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• 214. Shortest Palindrome
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• 215. Kth Largest Element in an Array
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• 216. Combination Sum III
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• 217. Contains Duplicate
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• 218. The Skyline Problem
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• 219. Contains Duplicate II
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• 22. Generate Parentheses
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• 220. Contains Duplicate III
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• 221. Maximal Square
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• 222. Count Complete Tree Nodes
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• 223. Rectangle Area
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• 224. Basic Calculator
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• 225. Implement Stack using Queues
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• 226. Invert Binary Tree
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• 227. Basic Calculator II
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• 228. Summary Ranges
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• 229. Majority Element II
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• 23. Merge k Sorted Lists
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• 230. Kth Smallest Element in a BST
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• 231. Power of Two
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• 232. Implement Queue using Stacks
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• 233. Number of Digit One
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• 234. Palindrome Linked List
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• 235. Lowest Common Ancestor of a Binary Search Tree
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• 236. Lowest Common Ancestor of a Binary Tree
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• 237. Delete Node in a Linked List
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• 238. Product of Array Except Self
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• 239. Sliding Window Maximum
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• 24. Swap Nodes in Pairs
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• 240. Search a 2D Matrix II
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• 241. Different Ways to Add Parentheses
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• 242. Valid Anagram
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• 246. Strobogrammatic Number
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• 247. Strobogrammatic Number II
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• 248. Strobogrammatic Number III
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• 25. Reverse Nodes in k Group
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• 256. Paint House
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• 257. Binary Tree Paths
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• 258. Add Digits
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• 26. Remove Duplicates from Sorted Array
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• 260. Single Number III
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• 263. Ugly Number
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• 264. Ugly Number II
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• 265. Paint House II
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• 268. Missing Number
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• 269. Alien Dictionary
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• 27. Remove Element
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• 270. Closest Binary Search Tree Value
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• 272. Closest Binary Search Tree Value II
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• 273. Integer to English Words
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• 274. H Index
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• 275. H Index II
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• 276. Paint Fence
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• 278. First Bad Version
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• 279. Perfect Squares
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• 28. Implement strStr()
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• 282. Expression Add Operators
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• 283. Move Zeroes
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• 284. Peeking Iterator
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• 287. Find the Duplicate Number
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• 289. Game of Life
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• 29. Divide Two Integers
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• 290. Word Pattern
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• 291. Word Pattern II
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• 292. Nim Game
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• 293. Flip Game
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• 295. Find Median from Data Stream
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• 296. Best Meeting Point
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• 297. Serialize and Deserialize Binary Tree
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• 299. Bulls and Cows
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• 3. Longest Substring Without Repeating Characters
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• 30. Substring with Concatenation of All Words
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• 300. Longest Increasing Subsequence
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• 301. Remove Invalid Parentheses
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• 302. Smallest Rectangle Enclosing Black Pixels
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• 303. Range Sum Query Immutable
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• 304. Range Sum Query 2D Immutable
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• 305. Number of Islands II
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• 306. Additive Number
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• 307. Range Sum Query Mutable
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• 309. Best Time to Buy and Sell Stock with Cooldown
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• 31. Next Permutation
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• 310. Minimum Height Trees
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• 312. Burst Balloons
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• 313. Super Ugly Number
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• 315. Count of Smaller Numbers After Self
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• 316. Remove Duplicate Letters
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• 317. Shortest Distance from All Buildings
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• 318. Maximum Product of Word Lengths
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• 319. Bulb Switcher
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• 32. Longest Valid Parentheses
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• 321. Create Maximum Number
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• 322. Coin Change
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• 324. Wiggle Sort II
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• 326. Power of Three
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• 327. Count of Range Sum
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• 328. Odd Even Linked List
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• 329. Longest Increasing Path in a Matrix
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• 33. Search in Rotated Sorted Array
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• 330. Patching Array
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• 331. Verify Preorder Serialization of a Binary Tree
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• 332. Reconstruct Itinerary
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• 334. Increasing Triplet Subsequence
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• 335. Self Crossing
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• 336. Palindrome Pairs
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• 337. House Robber III
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• 338. Counting Bits
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• 34. Search for a Range
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• 340. Longest Substring with At Most K Distinct Characters
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• 341. Flatten Nested List Iterator
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• 342. Power of Four
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• 343. Integer Break
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• 344. Reverse String
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• 345. Reverse Vowels of a String
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• 347. Top K Frequent Elements
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• 349. Intersection of Two Arrays
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• 35. Search Insert Position
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• 350. Intersection of Two Arrays II
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• 352. Data Stream as Disjoint Intervals
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• 354. Russian Doll Envelopes
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• 357. Count Numbers with Unique Digits
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• 358. Rearrange String k Distance Apart
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• 36. Valid Sudoku
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• 363. Max Sum of Rectangle No Larger Than K
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• 367. Valid Perfect Square
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• 368. Largest Divisible Subset
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• 37. Sudoku Solver
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• 371. Sum of Two Integers
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• 372. Super Pow
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• 373. Find K Pairs with Smallest Sums
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• 374. Guess Number Higher or Lower
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• 375. Guess Number Higher or Lower II
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• 376. Wiggle Subsequence
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• 377. Combination Sum IV
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• 378. Kth Smallest Element in a Sorted Matrix
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• 38. Count and Say
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• 380. Insert Delete GetRandom O(1)
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• 381. Insert Delete GetRandom O(1) Duplicates allowed
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• 382. Linked List Random Node
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• 383. Ransom Note
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• 384. Shuffle an Array
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• 385. Mini Parser
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• 386. Lexicographical Numbers
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• 387. First Unique Character in a String
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• 388. Longest Absolute File Path
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• 389. Find the Difference
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• 39. Combination Sum
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• 390. Elimination Game
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• 391. Perfect Rectangle
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• 392. Is Subsequence
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• 393. UTF 8 Validation
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• 394. Decode String
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• 395. Longest Substring with At Least K Repeating Characters
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• 396. Rotate Function
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• 397. Integer Replacement
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• 398. Random Pick Index
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• 399. Evaluate Division
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• 4. Median of Two Sorted Arrays
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• 40. Combination Sum II
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• 400. Nth Digit
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• 401. Binary Watch
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• 402. Remove K Digits
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• 403. Frog Jump
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• 404. Sum of Left Leaves
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• 405. Convert a Number to Hexadecimal
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• 406. Queue Reconstruction by Height
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• 407. Trapping Rain Water II
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• 409. Longest Palindrome
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• 41. First Missing Positive
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• 410. Split Array Largest Sum
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• 412. Fizz Buzz
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• 413. Arithmetic Slices
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• 414. Third Maximum Number
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• 415. Add Strings
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• 416. Partition Equal Subset Sum
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• 417. Pacific Atlantic Water Flow
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• 42. Trapping Rain Water
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• 421. Maximum XOR of Two Numbers in an Array
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• 425. Word Squares
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• 43. Multiply Strings
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• 437. Path Sum III
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• 438. Find All Anagrams in a String
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• 44. Wildcard Matching
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• 441. Arranging Coins
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• 444. Sequence Reconstruction
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• 45. Jump Game II
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• 46. Permutations
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• 464. Can I Win
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• 47. Permutations II
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• 48. Rotate Image
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• 49. Group Anagrams
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• 5. Longest Palindromic Substring
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• 50. Pow(x, n)
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• 51. N Queens
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• 52. N Queens II
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• 53. Maximum Subarray
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• 54. Spiral Matrix
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• 55. Jump Game
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• 56. Merge Intervals
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• 57. Insert Interval
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• 58. Length of Last Word
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• 59. Spiral Matrix II
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• 6. ZigZag Conversion
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• 60. Permutation Sequence
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• 61. Rotate List
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• 62. Unique Paths
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• 63. Unique Paths II
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• 64. Minimum Path Sum
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• 65. Valid Number
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• 66. Plus One
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• 67. Add Binary
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• 68. Text Justification
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• 69. Sqrt(x)
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• 7. Reverse Integer
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• 70. Climbing Stairs
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• 71. Simplify Path
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• 72. Edit Distance
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• 73. Set Matrix Zeroes
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• 74. Search a 2D Matrix
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• 75. Sort Colors
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• 76. Minimum Window Substring
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• 77. Combinations
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• 78. Subsets
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• 79. Word Search
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• 8. String to Integer (atoi)
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• 80. Remove Duplicates from Sorted Array II
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• 81. Search in Rotated Sorted Array II
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• 82. Remove Duplicates from Sorted List II
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• 83. Remove Duplicates from Sorted List
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• 84. Largest Rectangle in Histogram
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• 85. Maximal Rectangle
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• 86. Partition List
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• 87. Scramble String
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• 88. Merge Sorted Array
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• 89. Gray Code
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• 9. Palindrome Number
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• 90. Subsets II
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• 91. Decode Ways
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• 92. Reverse Linked List II
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• 93. Restore IP Addresses
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• 94. Binary Tree Inorder Traversal
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• 95. Unique Binary Search Trees II
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• 96. Unique Binary Search Trees
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• 97. Interleaving String
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• 98. Validate Binary Search Tree
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• 99. Recover Binary Search Tree
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