Hey Everyone, I published the entire Hashing Playlist. You will get from fundamentals to advance level problems which are very important from an interview point of view.

⭐ Learn Basic of how HashMap and HashSet Works

1. Design HashSet
2. Design HashMap

⭐ How you can use array as HashMap?
3. Find Common Characters

4. First Unique Character In A String

⭐ How to create own hashing function?
5. TwoSum I && II

6. Encode And Decode Tiny URL

⭐ Some Good Medium level questions(use STL)
7. Find Elements In A Contaminated Binary Tree

8. Sort Characters By Frequency
9. Top K Frequent Elements
10. Most Frequent Subtree Sum
11. Group Anagrams
12. 4Sum II
13. Valid Sudoku
14. Subarray Sum Equals K
15. Design Underground System

Playlist Link: https://www.youtube.com/playlist?list=PLSH9gf0XETouStSgwNw_7YCHhRgQU4lvd

Github Repo: https://github.com/Vishal-raj-1/DSA-for-Placement-Internship/tree/main/HashMap%20%26%20HashSet