Merge pull request #269 from Priyangshuyogi/patch-1

Update CONTRIBUTORS.md

Author: prateekiiest

CONTRIBUTORS.md

@@ -18,3 +18,4 @@ Thanks for all your contributions :heart: :octocat:
 | [Zanark ( Debashish Mishra )](https://github.com/Zanark) | [PR #222](https://github.com/codeIIEST/Algorithms/pull/222) , [PR #146](https://github.com/codeIIEST/Algorithms/pull/146) , [PR #225](https://github.com/codeIIEST/Algorithms/pull/225) , [PR #135](https://github.com/codeIIEST/Algorithms/pull/135) | CLOSED , MERGED , MERGED , CLOSED|
 | [d3v3sh5ingh](https://github.com/D3v3sh5ingh) | [PR #126](https://github.com/codeIIEST/Algorithms/pull/126) , [PR #161](https://github.com/codeIIEST/Algorithms/pull/161) | Closed , MERGED|
 |[imVivekGupta](https://github.com/imVivekGupta)|[#173](https://github.com/codeIIEST/Algorithms/pull/173), [#182](https://github.com/codeIIEST/Algorithms/pull/182), [#218](https://github.com/codeIIEST/Algorithms/pull/218), [#230](https://github.com/codeIIEST/Algorithms/pull/230) | MERGED |
+|[Priyangshuyogi](https://github.com/Priyangshuyogi)| [#188](https://github.com/codeIIEST/Algorithms/pull/188), [#227](https://github.com/codeIIEST/Algorithms/pull/227), [#251](https://github.com/codeIIEST/Algorithms/pull/251)| MERGED , MERGED , OPEN |