LetsCode

Leetcode 31. Next Permutation (simulation)

Leetcode 28. Find the Index of the First Occurrence in a String (how to learn KMP)

Leetcode 30. Substring with Concatenation of All Words

Leetcode 32. Longest Valid Parentheses

Leetcode 14. Longest Common Prefix (Trie)

Mastering Algorithmic Patterns Leetcode problems 11 - 20

Leetcode 7. Reverse Integer (java fix overflow)

Mastering Algorithmic Patterns Leetcode problems 1 - 10

Leetcode 10. Regular Expression Matching (DP)

Leetcode 414. Third Maximum Number (Java)

Leetcode 119. Pascal's Triangle II (Java)

Leetcode 118. Pascal's Triangle (Java)

Leetcode 112. Path Sum (Java)

Leetcode 110. Balanced Binary Tree (Java)

Leetcode 344. Reverse String (Java)

Leetcode 111. Minimum Depth of Binary Tree (Java)

Leetcode 104. Maximum Depth of Binary Tree (Java)

Leetcode 101. Symmetric Tree (Java)

Leetcode 100. Same Tree (Java)

Leetcode 88. Merge Sorted Array (Java)

Leetcode 145. Binary Tree Postorder Traversal (Java)

Leetcode 144. Binary Tree Preorder Traversal (Java)

Leetcode 94. Binary Tree Inorder Traversal (Java)

Leetcode 125. Valid Palindrome (Java)

Leetcode 136. Single Number (Java)

Leetcode 121. Best Time to Buy and Sell Stock (Java)

Leetcode 83. Remove Duplicates from Sorted List (Java)

Leetcode 70. Climbing Stairs (Java)

Leetcode 69. Sqrt(x) (Java)

Leetcode 67. Add Binary (Java)