Personal Leetcode Solutions in Java

Motivation

I started off on this quest in order to prepare for job interviews during my Senior year. It has been challenging and fun. Most importantly, it helps me learn new approaches towards problems and become a better programmer.

(Not all solutions added to this repo)

Name		Name	Last commit message	Last commit date
Latest commit History 18 Commits
.idea		.idea
1. Two Sum/src		1. Two Sum/src
10. Regular Expression Matching/src		10. Regular Expression Matching/src
100. Same Tree/src		100. Same Tree/src
101. Symmetric Tree/src		101. Symmetric Tree/src
103. Binary Tree Zigzag Level Order Traversal/src		103. Binary Tree Zigzag Level Order Traversal/src
108. Convert Sorted Array to Binary Search Tree/src		108. Convert Sorted Array to Binary Search Tree/src
109. Convert Sorted List to Binary Search Tree/src		109. Convert Sorted List to Binary Search Tree/src
11. Container With Most Water/src		11. Container With Most Water/src
12. Integer to Roman/src		12. Integer to Roman/src
121. Best Time to Buy and Sell Stock/src		121. Best Time to Buy and Sell Stock/src
125. Valid Palindrome/src		125. Valid Palindrome/src
127. Word Ladder/src		127. Word Ladder/src
128. Longest Consecutive Sequence/src		128. Longest Consecutive Sequence/src
129. Sum Root to Leaf Numbers/src		129. Sum Root to Leaf Numbers/src
13. Roman to Integer/src		13. Roman to Integer/src
131. Palindrome Partitioning/src		131. Palindrome Partitioning/src
139. Word Break/src		139. Word Break/src
14. Longest Common Prefix/src		14. Longest Common Prefix/src
140. Word Break II/src		140. Word Break II/src
141. Linked List Cycle/src		141. Linked List Cycle/src
142. Linked List Cycle II/src		142. Linked List Cycle II/src
143. Reorder List/src		143. Reorder List/src
144. Binary Tree Preorder Traversal/src		144. Binary Tree Preorder Traversal/src
145. Binary Tree Postorder Traversal/src		145. Binary Tree Postorder Traversal/src
146. LRU Cache/src		146. LRU Cache/src
15. 3Sum/src		15. 3Sum/src
157. Read N Characters Given Read4/src		157. Read N Characters Given Read4/src
158. Read N Characters Given Read4 II - Call multiple times/src		158. Read N Characters Given Read4 II - Call multiple times/src
159. Longest Substring with At Most Two Distinct Characters/src		159. Longest Substring with At Most Two Distinct Characters/src
160. Intersection of Two Linked Lists/src		160. Intersection of Two Linked Lists/src
161. One Edit Distance/src		161. One Edit Distance/src
167. Two Sum II - Input array is sorted/src		167. Two Sum II - Input array is sorted/src
169. Majority Element/src		169. Majority Element/src
17. Letter Combinations of a Phone Number/src		17. Letter Combinations of a Phone Number/src
171. Excel Sheet Column Number/src		171. Excel Sheet Column Number/src
172. Factorial Trailing Zeroes/src		172. Factorial Trailing Zeroes/src
173. Binary Search Tree Iterator/src		173. Binary Search Tree Iterator/src
179. Largest Number/src		179. Largest Number/src
186. Reverse Words in a String II/src		186. Reverse Words in a String II/src
189. Rotate Array/src		189. Rotate Array/src
19. Remove Nth Node From End of List/src		19. Remove Nth Node From End of List/src
191. Number of 1 Bits/src		191. Number of 1 Bits/src
198. House Robber/src		198. House Robber/src
2. Add Two Numbers/src		2. Add Two Numbers/src
20. Valid Parentheses/src		20. Valid Parentheses/src
200. Number of Islands/src		200. Number of Islands/src
203. Remove Linked List Elements/src		203. Remove Linked List Elements/src
204. Count Primes/src		204. Count Primes/src
209. Minimum Size Subarray Sum/src		209. Minimum Size Subarray Sum/src
21. Merge Two Sorted Lists/src		21. Merge Two Sorted Lists/src
210. Course Schedule II/src		210. Course Schedule II/src
215. Kth Largest Element in an Array/src		215. Kth Largest Element in an Array/src
217. Contains Duplicate/src		217. Contains Duplicate/src
219. Contains Duplicate II/src		219. Contains Duplicate II/src
22. Generate Parentheses/src		22. Generate Parentheses/src
221. Maximal Square/src		221. Maximal Square/src
225. Implement Stack using Queues/src		225. Implement Stack using Queues/src
226. Invert Binary Tree/src		226. Invert Binary Tree/src
23. Merge k Sorted Lists/src		23. Merge k Sorted Lists/src
230. Kth Smallest Element in a BST/src		230. Kth Smallest Element in a BST/src
232. Implement Queue using Stacks/src		232. Implement Queue using Stacks/src
235. Lowest Common Ancestor of a Binary Search Tree/src		235. Lowest Common Ancestor of a Binary Search Tree/src
237. Delete Node in a Linked List/src		237. Delete Node in a Linked List/src
238. Product of Array Except Self/src		238. Product of Array Except Self/src
24. Swap Nodes in Pairs/src		24. Swap Nodes in Pairs/src
242. Valid Anagram/src		242. Valid Anagram/src
249. Group Shifted Strings/src		249. Group Shifted Strings/src
25. Reverse Nodes in k-Group/src		25. Reverse Nodes in k-Group/src
252. Meeting Rooms/src		252. Meeting Rooms/src
253. Meeting Rooms II/src		253. Meeting Rooms II/src
254. Factor Combinations/src		254. Factor Combinations/src
257. Binary Tree Paths/src		257. Binary Tree Paths/src
260. Single Number III/src		260. Single Number III/src
261. Graph Valid Tree/src		261. Graph Valid Tree/src
268. Missing Number/src		268. Missing Number/src
273. Integer to English Words/src		273. Integer to English Words/src
274. H-Index/src		274. H-Index/src
277. Find the Celebrity/src		277. Find the Celebrity/src
278. First Bad Version/src		278. First Bad Version/src
28. Implement strStr()/src		28. Implement strStr()/src
283. Move Zeroes/src		283. Move Zeroes/src
285. Inorder Successor in BST/src		285. Inorder Successor in BST/src
286. Walls and Gates/src		286. Walls and Gates/src
290. Word Pattern/src		290. Word Pattern/src
297. Serialize and Deserialize Binary Tree/src		297. Serialize and Deserialize Binary Tree/src
299. Bulls and Cows/src		299. Bulls and Cows/src
3. Longest Substring Without Repeating Characters/src		3. Longest Substring Without Repeating Characters/src
300. Longest Increasing Subsequence/src		300. Longest Increasing Subsequence/src
309. Best Time to Buy and Sell Stock with Cooldown/src		309. Best Time to Buy and Sell Stock with Cooldown/src
311. Sparse Matrix Multiplication/src		311. Sparse Matrix Multiplication/src
312. Burst Balloons/src		312. Burst Balloons/src
314. Binary Tree Vertical Order Traversal/src		314. Binary Tree Vertical Order Traversal/src
32. Longest Valid Parentheses/src		32. Longest Valid Parentheses/src
322. Coin Change/src		322. Coin Change/src
325. Maximum Size Subarray Sum Equals k/src		325. Maximum Size Subarray Sum Equals k/src
328. Odd Even Linked List/src		328. Odd Even Linked List/src
334. Increasing Triplet Subsequence/src		334. Increasing Triplet Subsequence/src
336. Palindrome Pairs/src		336. Palindrome Pairs/src
341. Flatten Nested List Iterator/src		341. Flatten Nested List Iterator/src

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