leetcode

Solution/Implementation of following problems:

1. LRU Cache (https://leetcode.com/problems/lru-cache/)
2. RemovePalindromicSubsequences (https://leetcode.com/explore/challenge/card/march-leetcoding-challenge-2021/589/week-2-march-8th-march-14th/3665/)
3. Majority Element in array (https://leetcode.com/problems/majority-element/)
4. LFU cache implementation