LeetCode Solutions

This repository contains my solutions to various LeetCode problems in C++, Java, and Go. The solutions are organized by difficulty level (Easy, Medium, Hard).

Table of Contents

• Easy Problems
• Medium Problems
• Hard Problems
• License

Easy Problems

Problem	Solutions	LeetCode Link
Add Binary	C++	Problem
Best Time to Buy and Sell Stock	C++	Problem
Binary Tree Inorder Traversal	C++	Problem
Binary Tree Postorder Traversal	C++	Problem
Binary Tree Preorder Traversal	C++	Problem
Climbing Stairs	C++	Problem
Contains Duplicate	C++	Problem
Contains Duplicate II	C++	Problem
Excel Sheet Column Number	Java	Problem
Excel Sheet Column Title	Java	Problem
First Unique Character in a String	C++	Problem
Implement Queue using Stacks	C++	Problem
Implement strStr()	C++	Problem
Intersection of Two Arrays II	C++	Problem
Invert Binary Tree	C++	Problem
Linked List Cycle	C++	Problem
Longest Common Prefix	Java	Problem
Maximum Depth of Binary Tree	C++	Problem
Maximum Number of Words You Can Type	Java	Problem
Maximum Subarray	C++	Problem
Merge Sorted Array	C++	Problem
Merge Two Sorted Lists	C++	Problem
Minimum Depth of Binary Tree	C++	Problem
Palindrome Number	C, C++	Problem
Pascal's Triangle	C++	Problem
Path Sum	C++	Problem
Plus One	C++	Problem
Ransom Note	C++	Problem
Remove Duplicates from Sorted Array	C++, Java	Problem
Remove Duplicates from Sorted List	C++	Problem
Remove Linked List Elements	C++	Problem
Repeated Substring Pattern	C++	Problem
Reshape the Matrix	C++	Problem
Reverse Bits	C++	Problem
Reverse Linked List	C++	Problem
Roman to Integer	Java	Problem
Same Tree	C++	Problem
Search in a Binary Search Tree	C++	Problem
Search Insert Position	C++	Problem
Shuffle String	C++	Problem
Sqrt(x)	C++	Problem
Symmetric Tree	C++	Problem
Transpose Matrix	C++	Problem
Two Sum	C++, Java	Problem
Valid Anagram	C++	Problem
Valid Palindrome	Java	Problem
Valid Parentheses	C++	Problem

Medium Problems

Problem	Solutions	LeetCode Link
Add Two Numbers	Java	Problem
Binary Tree Level Order Traversal	C++	Problem
Container With Most Water	C++	Problem
Equal Row and Column Pairs	C++	Problem
Insert into a Binary Search Tree	C++	Problem
Letter Combinations of a Phone Number	C++	Problem
Longest Palindromic Substring	C++, Java	Problem
Remove Nth Node From End of List	Go	Problem
Reverse Integer	Java	Problem
Search a 2D Matrix	C++	Problem
Single Element in a Sorted Array	Java	Problem
Sort List	C	Problem
String to Integer (atoi)	C++	Problem
Two Sum II - Input Array Is Sorted	C++	Problem
Valid Sudoku	C++	Problem
Validate Binary Search Tree	C++	Problem
Zigzag Conversion	Java	Problem

Hard Problems

Problem	Solutions	LeetCode Link
Longest Cycle in a Graph	Java	Problem
Longest Valid Parentheses	C++, Java	Problem
Sudoku Solver	C++, Java	Problem

License

This project is licensed under the terms of the MIT license.