Easy 48
- Leetcode 1137. N-th Tribonacci Number
- Leetcode 997. Find the Town Judge
- Leetcode 953. Verifying an Alien Dictionary
- Leetcode 463. Island Perimeter
- Leetcode 1863. Sum of All Subset XOR Totals
- Leetcode 145. Binary Tree Postorder Traversal
- Leetcode 144. Binary Tree Preorder Traversal
- Leetcode 94. Binary Tree Inorder Traversal
- Leetcode 69. Sqrt(x)
- Leetcode 374. Guess Number Higher or Lower
- Leetcode 35. Search Insert Position
- Leetcode 682. Baseball Game
- Leetcode 232. Implement Queue using Stacks
- Leetcode 225. Implement Stack using Queues
- Leetcode 219. Contains Duplicate II
- Leetcode 88. Merge Sorted Array
- Leetcode 26. Remove Duplicates from Sorted Array
- Leetcode 680. Valid Palindrome II
- Leetcode 344. Reverse String
- Leetcode 1768. Merge Strings Alternately
- Leetcode 706. Design HashMap
- Leetcode 705. Design HashSet
- Leetcode 169. Majority Element
- Leetcode 27. Remove Element
- Leetcode 14. Longest Common Prefix
- Leetcode 1929. Concatenation of Array
- Leetcode 746. Min Cost Climbing Stairs
- Leetcode 70. Climbing Stairs
- 703. Kth Largest Element in a Stream
- 1046. Last Stone Weight
- Leetcode 572 - Subtree of Another Tree
- Leetcode 543: Diameter of Binary Tree
- Leetcode 226 - Invert Binary Tree
- Leetcode 110 - Balanced Binary Tree
- Leetcode 104: Maximum Depth of Binary Tree
- Leetcode 100 - Same Tree
- Leetcode 21 - Merge Two Sorted Lists
- Leetcode 206 - Reverse Linked List
- Leetcode 141 - Linked List Cycle
- Leetcode 704. Binary Search
- Leetcode 20 - Valid Parentheses
- Leetcode 121 - Best Time to Buy and Sell Stock
- Leetcode 125 - Valid Palindrome
- Leetcode 242 - Valid Anagram
- Leetcode 217 - Contains Duplicate
- Leetcode 977 - Squares of a Sorted Array
- Leetcode 1 - Two Sum
- Leetcode 392 - Is Subsequence