| 929|[Unique Email Addresses](https://leetcode.com/problems/unique-email-addresses)|[Solution](https://github.com/Pratul1997/LeetCode/tree/master/Source%20Code/929.%20Unique%20Email%20Addresses)|**O(n)**|**O(n)**| Easy|```String```|

| 914|[X of a Kind in a Deck of Cards](https://leetcode.com/problems/x-of-a-kind-in-a-deck-of-cards)|[Solution](https://github.com/Pratul1997/LeetCode/tree/master/Source%20Code/914.%20X%20of%20a%20Kind%20in%20a%20Deck%20of%20Cards)|**O(n^2)**|**O(n)**| Easy|```String, Math```|