Dhruvil-Lakhtaria

Hey I have basic knowledge of segment tree and willing to work on this issue. Basic segment tree. [range-frequency-queries](https://leetcode.com/problems/range-frequency-queries/) [range-sum-query-mutalble](https://leetcode.com/problems/range-sum-query-mutable/). And I have started researching about dynamic segment tree and...

I am done with - basic segment tree (tutorial + solution). - lazy propagation (tutorial). can I make a pull request for this much and get it reviewed. I will...

PR added #278

Please assign me this under hacktober fest.

Profile added [#42 ](https://github.com/AnkitaMalik22/devmate/pull/42) PR Generated.