Added Code to find minimum steps to collect coin stacks #7273

[MonalikaKapoor]

Have you read the Contributing Guidelines on Pull Requests?

Yes

Description

I've added the changes as requested!

Checklist

• [x] I've read the contribution guidelines.
• [x] I've checked the issue list before deciding what to submit.
• [x] I've edited the README.md and link to my code.

Related Issues or Pull Requests

Related Issue #7273 and PR #7274