README.md~

# LeetCode_Practice
Links to problems solved and interesting resources/hints used for their solutions.
Additionally problems I found tricky and solutions to them.


## Solved Problems (check folder name same as problem name)
[Search in 2D Matrix](https://leetcode.com/problems/search-a-2d-matrix-ii/)
[Longest ZigZag Path in a Binary Tree](https://leetcode.com/problems/longest-zigzag-path-in-a-binary-tree/)
[Binary Search Tree to Greater Sum Tree](https://leetcode.com/problems/binary-search-tree-to-greater-sum-tree/)
[Construct Binary Tree from Preorder and Inorder Traversal](https://leetcode.com/problems/construct-binary-tree-from-preorder-and-inorder-traversal/)



### Leetcode Challenge April
Resources:
[Errichto's playlist](https://www.youtube.com/playlist?list=PLl0KD3g-oDOHElCF7S7q6CRGz1qG8vQkS)

Note: The solutions I've provided links to are the one's I thought were the easiest to implement and most efficient.

1. Single Number --> [(problem)](https://leetcode.com/explore/challenge/card/30-day-leetcoding-challenge/528/week-1/3283/)[(Errichto's video solution)](https://www.youtube.com/watch?v=wvVqDkX8U4A&list=PLl0KD3g-oDOHElCF7S7q6CRGz1qG8vQkS&index=1)
2. Happy Number --> [(problem)](https://leetcode.com/explore/challenge/card/30-day-leetcoding-challenge/528/week-1/3284/)[(solution)](https://www.geeksforgeeks.org/happy-number/)