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Introduction
1.Two Sum
2.Add Two Numbers
3.Longest Substring Without Repeating Characters
4.Median of Two Sorted Arrays
5.Longest Palindromic Substring
6.ZigZag Conversion
7. Reverse Integer
8. String to Integer (atoi)
9. Palindrome Number
10. Regular Expression Matching
11. Container With Most Water
12. Integer to Roman
13. Roman to Integer
14. Longest Common Prefix
15. 3Sum
16. 3Sum Closest
17. Letter Combinations of a Phone Number
18. 4Sum
19. Remove Nth Node From End of List
20. Valid Parentheses
21. Merge Two Sorted Lists
22. Generate Parentheses
23. Merge k Sorted Lists
24. Swap Nodes in Pairs
25. Reverse Nodes in k-Group
26. Remove Duplicates from Sorted Array
27. Remove Element
28. Implement strStr()
29. Divide Two Integers
30. Substring with Concatenation of All Words
31. Next Permutation
32. Longest Valid Parentheses
33. Search in Rotated Sorted Array
34. Search for a Range
35. Search Insert Position
36. Valid Sudoku
37. Sudoku Solver
38. Count and Say
39. Combination Sum
40. Combination Sum II
41. First Missing Positive
42. Trapping Rain Water
43. Multiply Strings
44. Wildcard Matching
45. Jump Game II
46. Permutations
47. Permutations II
48. Rotate Image
49. Group Anagrams
50. Pow(x, n)
51. N-Queens
52. N-Queens II
53. Maximum Subarray
54. Spiral Matrix
55. Jump Game
56. Merge Intervals
57. Insert Interval
58. Length of Last Word
59. Spiral Matrix II
60. Permutation Sequence
61. Rotate List
62. Unique Paths
63. Unique Paths II
64. Minimum Path Sum
65. Valid Number
66. Plus One
67. Add Binary
68. Text Justification
69. Sqrt(x)
70. Climbing Stairs
71. Simplify Path
72. Edit Distance
73. Set Matrix Zeroes
74. Search a 2D Matrix
75. Sort Colors
76. Minimum Window Substring
77. Combinations
78. Subsets
79. Word Search
80. Remove Duplicates from Sorted Array II
81. Search in Rotated Sorted Array II
82. Remove Duplicates from Sorted List II
83. Remove Duplicates from Sorted List
84. Largest Rectangle in Histogram
85. Maximal Rectangle
86. Partition List
87. Scramble String
88. Merge Sorted Array
89. Gray Code
90. Subsets II
91. Decode Ways
92. Reverse Linked List II
93. Restore IP Addresses
94. Binary Tree Inorder Traversal
95. Unique Binary Search Trees II
96. Unique Binary Search Trees
97. Interleaving String
98. Validate Binary Search Tree
99. Recover Binary Search Tree
100. Same Tree
101. Symmetric Tree
102. Binary Tree Level Order Traversal
103. Binary Tree Zigzag Level Order Traversal
104. Maximum Depth of Binary Tree
105. Construct Binary Tree from Preorder and Inorder Traversal
106. Construct Binary Tree from Inorder and Postorder Traversal
107. Binary Tree Level Order Traversal II
108. Convert Sorted Array to Binary Search Tree
109. Convert Sorted List to Binary Search Tree
110. Balanced Binary Tree
111. Minimum Depth of Binary Tree
112. Path Sum
113. Path Sum II
114. Flatten Binary Tree to Linked List
115. Distinct Subsequences
116. Populating Next Right Pointers in Each Node
117. Populating Next Right Pointers in Each Node II
118. Pascal's Triangle
119. Pascal's Triangle II
120. Triangle
121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II
123. Best Time to Buy and Sell Stock III
124. Binary Tree Maximum Path Sum
125. Valid Palindrome
126. Word Ladder II
127. Word Ladder
128. Longest Consecutive Sequence
129. Sum Root to Leaf Numbers
130. Surrounded Regions
131. Palindrome Partitioning
132. Palindrome Partitioning II
133. Clone Graph
134. Gas Station
135. Candy
136. Single Number
137. Single Number II
138. Copy List with Random Pointer
139. Word Break
140. Word Break II
141. Linked List Cycle
142. Linked List Cycle II
143. Reorder List
144. Binary Tree Preorder Traversal
145. Binary Tree Postorder Traversal
146. LRU Cache
147. Insertion Sort List
148. Sort List
149. Max Points on a Line
150. Evaluate Reverse Polish Notation
151. Reverse Words in a String
152. Maximum Product Subarray
153. Find Minimum in Rotated Sorted Array
154. Find Minimum in Rotated Sorted Array II
155. Min Stack
156. Binary Tree Upside Down
157. Read N Characters Given Read4
158. Read N Characters Given Read4 II - Call multiple times
159. Longest Substring with At Most Two Distinct Characters
160. Intersection of Two Linked Lists
161. One Edit Distance
162. Find Peak Element
163. Missing Ranges
164. Maximum Gap
165. Compare Version Numbers
166. Fraction to Recurring Decimal
167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title
169. Majority Element
170. Two Sum III - Data structure design
171. Excel Sheet Column Number
172. Factorial Trailing Zeroes
173. Binary Search Tree Iterator
174. Dungeon Game
175. Combine Two Tables
176. Second Highest Salary
177. Nth Highest Salary
178. Rank Scores
179. Largest Number
180. Consecutive Numbers
181. Employees Earning More Than Their Managers
182. Duplicate Emails
183. Customers Who Never Order
184. Department Highest Salary
185. Department Top Three Salaries
186. Reverse Words in a String II
187. Repeated DNA Sequences
Page 8
189. Rotate Array
190. Reverse Bits
191. Number of 1 Bits
196. Delete Duplicate Emails
197. Rising Temperature
198. House Robber
199. Binary Tree Right Side View
200. Number of Islands
201. Bitwise AND of Numbers Range
202. Happy Number
203. Remove Linked List Elements
204. Count Primes
205. Isomorphic Strings
206. Reverse Linked List
207. Course Schedule
208. Implement Trie (Prefix Tree)
209. Minimum Size Subarray Sum
210. Course Schedule II
211. Add and Search Word - Data structure design
212. Word Search II
213. House Robber II
215. Kth Largest Element in an Array
216. Combination Sum III
217. Contains Duplicate
219. Contains Duplicate II
220. Contains Duplicate III
221. Maximal Square
222. Count Complete Tree Nodes
223. Rectangle Area
224. Basic Calculator
225. Implement Stack using Queues
226. Invert Binary Tree
227. Basic Calculator II
228. Summary Ranges
229. Majority Element II
230. Kth Smallest Element in a BST
231. Power of Two
232. Implement Queue using Stacks
234. 234. Palindrome Linked List
235. Lowest Common Ancestor of a Binary Search Tree
236. Lowest Common Ancestor of a Binary Tree
237. Delete Node in a Linked List
238. Product of Array Except Self
239. Sliding Window Maximum
240. Search a 2D Matrix II
241. Different Ways to Add Parentheses
242. Valid Anagram
243. Shortest Word Distance
244. Shortest Word Distance II
245. Shortest Word Distance III
246. Strobogrammatic Number
247. Strobogrammatic Number II
248. Strobogrammatic Number III
249. Group Shifted Strings
250. Count Univalue Subtrees
251. Flatten 2D Vector
252. Meeting Rooms
253. Meeting Rooms II
254. Factor Combinations
255. Verify Preorder Sequence in Binary Search Tree
256. Paint House
257. Binary Tree Paths
258. Add Digits
259. 3Sum Smaller
260. Single Number III
261. Graph Valid Tree
262. Trips and Users
263. Ugly Number
264. Ugly Number II
266. Palindrome Permutation
267. Palindrome Permutation II
268. Missing Number
269. Alien Dictionary
270. Closest Binary Search Tree Value
271. Encode and Decode Strings
272. Closest Binary Search Tree Value II
274. H-Index
275. H-Index II
276. Paint Fence
277. Find the Celebrity
278. First Bad Version
279. Perfect Squares
280. Wiggle Sort
281. Zigzag Iterator
282. Expression Add Operators
283.283. Move Zeroes
284. Peeking Iterator
285. Inorder Successor in BST
286. Walls and Gates
287. Find the Duplicate Number
288. Unique Word Abbreviation
289. Game of Life
290. Word Pattern
291. Word Pattern II
292. Nim Game
293. Flip Game
294. Flip Game II
295. Find Median from Data Stream
296. Best Meeting Point
297. Serialize and Deserialize Binary Tree
298. Binary Tree Longest Consecutive Sequence
299. Bulls and Cows
300. Longest Increasing Subsequence
301. Remove Invalid Parentheses
302. Smallest Rectangle Enclosing Black Pixels
303. Range Sum Query - Immutable
304. Range Sum Query 2D - Immutable
306. Additive Number
307. Range Sum Query - Mutable
310. Minimum Height Trees
311. Sparse Matrix Multiplication
312. Burst Balloons
313. Super Ugly Number
314. Binary Tree Vertical Order Traversal
315. Count of Smaller Numbers After Self
316. Remove Duplicate Letters
318. Maximum Product of Word Lengths
319. Bulb Switcher
320. Generalized Abbreviation
322. Coin Change
323. Number of Connected Components in an Undirected Graph
324. Wiggle Sort II
325. Maximum Size Subarray Sum Equals k
325. Maximum Size Subarray Sum Equals k
326. Power of Three
327. Count of Range Sum
328. Odd Even Linked List
329. Longest Increasing Path in a Matrix
330. Patching Array
331. Verify Preorder Serialization of a Binary Tree
332. Reconstruct Itinerary
333. Largest BST Subtree
334. Increasing Triplet Subsequence
335. Self Crossing
336. Palindrome Pairs
337. House Robber III
338. Counting Bits
339. Nested List Weight Sum
340. Longest Substring with At Most K Distinct Characters
341. Flatten Nested List Iterator
342. Power of Four
343. Integer Break
344. Reverse String
345. Reverse Vowels of a String
346. Moving Average from Data Stream
347. Top K Frequent Elements
348. Design Tic-Tac-Toe
349. Intersection of Two Arrays
350. Intersection of Two Arrays II
352. Data Stream as Disjoint Intervals
353. Design Snake Game
354. Russian Doll Envelopes
355. Design Twitter
356. Line Reflection
357. Count Numbers with Unique Digits
358. Rearrange String k Distance Apart
359. Logger Rate Limiter
360. Sort Transformed Array
361. Bomb Enemy
362. Design Hit Counter
363. Max Sum of Rectangle No Larger Than K
364. Nested List Weight Sum II
365. Water and Jug Problem
366. Find Leaves of Binary Tree
367. Valid Perfect Square
368. Largest Divisible Subset
369. Plus One Linked List
370. Range Addition
371. Sum of Two Integers
372. Super Pow
373. Find K Pairs with Smallest Sums
374. Guess Number Higher or Lower
375. Guess Number Higher or Lower II
376. Wiggle Subsequence
377. Combination Sum IV
380. Insert Delete GetRandom O(1)
381. Insert Delete GetRandom O(1) - Duplicates allowed
382. Linked List Random Node
383. Ransom Note
384. Shuffle an Array
385. Mini Parser
386. Third Maximum Number
387. Permutation in String

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330. Patching Array

Patching Array

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