LeetCode

My LeetCode solutions.

Follow this - https://github.com/ChanchalKumarMaji/LeetCode repo for latest updates. This org is just for backup and not updated regularly.

Name		Name	Last commit message	Last commit date
Latest commit History 276 Commits
1. Two Sum		1. Two Sum
10. Regular Expression Matching		10. Regular Expression Matching
100. Same Tree		100. Same Tree
101. Symmetric Tree		101. Symmetric Tree
102. Binary Tree Level Order Traversal		102. Binary Tree Level Order Traversal
1026. Maximum Difference Between Node and Ancestor		1026. Maximum Difference Between Node and Ancestor
103. Binary Tree Zigzag Level Order Traversal		103. Binary Tree Zigzag Level Order Traversal
104. Maximum Depth of Binary Tree		104. Maximum Depth of Binary Tree
107. Binary Tree Level Order Traversal II		107. Binary Tree Level Order Traversal II
108. Convert Sorted Array to Binary Search Tree		108. Convert Sorted Array to Binary Search Tree
11. Container With Most Water		11. Container With Most Water
110. Balanced Binary Tree		110. Balanced Binary Tree
111. Minimum Depth of Binary Tree		111. Minimum Depth of Binary Tree
112. Path Sum		112. Path Sum
113. Path Sum II		113. Path Sum II
116. Populating Next Right Pointers in Each Node		116. Populating Next Right Pointers in Each Node
117. Populating Next Right Pointers in Each Node II		117. Populating Next Right Pointers in Each Node II
118. Pascal's Triangle		118. Pascal's Triangle
119. Pascal's Triangle II		119. Pascal's Triangle II
12. Integer to Roman		12. Integer to Roman
120. Triangle		120. Triangle
121. Best Time to Buy and Sell Stock		121. Best Time to Buy and Sell Stock
122. Best Time to Buy and Sell Stock II		122. Best Time to Buy and Sell Stock II
125. Valid Palindrome		125. Valid Palindrome
13. Roman to Integer		13. Roman to Integer
130. Surrounded Regions		130. Surrounded Regions
134. Gas Station		134. Gas Station
136. Single Number		136. Single Number
137. Single Number II		137. Single Number II
139. Word Break		139. Word Break
14. Longest Common Prefix		14. Longest Common Prefix
141. Linked List Cycle		141. Linked List Cycle
142. Linked List Cycle II		142. Linked List Cycle II
143. Reorder List		143. Reorder List
144. Binary Tree Preorder Traversal		144. Binary Tree Preorder Traversal
145. Binary Tree Postorder Traversal		145. Binary Tree Postorder Traversal
15. 3Sum		15. 3Sum
150. Evaluate Reverse Polish Notation		150. Evaluate Reverse Polish Notation
151. Reverse Words in a String		151. Reverse Words in a String
152. Maximum Product Subarray		152. Maximum Product Subarray
153. Find Minimum in Rotated Sorted Array		153. Find Minimum in Rotated Sorted Array
154. Find Minimum in Rotated Sorted Array II		154. Find Minimum in Rotated Sorted Array II
155. Min Stack		155. Min Stack
160. Intersection of Two Linked Lists		160. Intersection of Two Linked Lists
167. Two Sum II - Input array is sorted		167. Two Sum II - Input array is sorted
168. Excel Sheet Column Title		168. Excel Sheet Column Title
169. Majority Element		169. Majority Element
17. Letter Combinations of a Phone Number		17. Letter Combinations of a Phone Number
171. Excel Sheet Column Number		171. Excel Sheet Column Number
172. Factorial Trailing Zeroes		172. Factorial Trailing Zeroes
187. Repeated DNA Sequences		187. Repeated DNA Sequences
189. Rotate Array		189. Rotate Array
19. Remove Nth Node From End of List		19. Remove Nth Node From End of List
190. Reverse Bits		190. Reverse Bits
191. Number of 1 Bits		191. Number of 1 Bits
198. House Robber		198. House Robber
199. Binary Tree Right Side View		199. Binary Tree Right Side View
2. Add Two Numbers		2. Add Two Numbers
20. Valid Parentheses		20. Valid Parentheses
200. Number of Islands		200. Number of Islands
201. Bitwise AND of Numbers Range		201. Bitwise AND of Numbers Range
202. Happy Number		202. Happy Number
203. Remove Linked List Elements		203. Remove Linked List Elements
204. Count Primes		204. Count Primes
205. Isomorphic Strings		205. Isomorphic Strings
206. Reverse Linked List		206. Reverse Linked List
21. Merge Two Sorted Lists		21. Merge Two Sorted Lists
213. House Robber II		213. House Robber II
214. Shortest Palindrome		214. Shortest Palindrome
215. Kth Largest Element in an Array		215. Kth Largest Element in an Array
217. Contains Duplicate		217. Contains Duplicate
219. Contains Duplicate II		219. Contains Duplicate II
221. Maximal Square		221. Maximal Square
222. Count Complete Tree Nodes		222. Count Complete Tree Nodes
225. Implement Stack using Queues		225. Implement Stack using Queues
226. Invert Binary Tree		226. Invert Binary Tree
23. Merge k Sorted Lists		23. Merge k Sorted Lists
230. Kth Smallest Element in a BST		230. Kth Smallest Element in a BST
231. Power of Two		231. Power of Two
232. Implement Queue using Stacks		232. Implement Queue using Stacks
234. Palindrome Linked List		234. Palindrome Linked List
235. Lowest Common Ancestor of a Binary Search Tree		235. Lowest Common Ancestor of a Binary Search Tree
236. Lowest Common Ancestor of a Binary Tree		236. Lowest Common Ancestor of a Binary Tree
237. Delete Node in a Linked List		237. Delete Node in a Linked List
240. Search a 2D Matrix II		240. Search a 2D Matrix II
242. Valid Anagram		242. Valid Anagram
257. Binary Tree Paths		257. Binary Tree Paths
258. Add Digits		258. Add Digits
26. Remove Duplicates from Sorted Array		26. Remove Duplicates from Sorted Array
260. Single Number III		260. Single Number III
263. Ugly Number		263. Ugly Number
268. Missing Number		268. Missing Number
27. Remove Element		27. Remove Element
278. First Bad Version		278. First Bad Version
28. Implement strStr()		28. Implement strStr()
283. Move Zeroes		283. Move Zeroes
287. Find the Duplicate Number		287. Find the Duplicate Number
289. Game of Life		289. Game of Life
29. Divide Two Integers		29. Divide Two Integers
290. Word Pattern		290. Word Pattern

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