Gray to binary equivalent solution added

[Vipullakum007]

Related Issue

Fixed : #410

Description

i have added solution of "Gray to Binary Equivalent" under gfg solution "0021 Gray to Binary Equivalent "

Type of PR

• Bug fix
• Feature enhancement
• Documentation update
• Other (specify): _______________

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• I have performed a self-review of my code.
• I have read and followed the Contribution Guidelines.
• I have tested the changes thoroughly before submitting this pull request.
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• I have commented my code, particularly in hard-to-understand areas.

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
No data about Coverage
No data about Duplication

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[deepsource-io]

Here's the code health analysis summary for commits f9c7aaa..c9f5b7a. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success		View Check ↗

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[Vipullakum007]

hey @ajay-dhangar , i have added solution to paths to reach origin .
can please make it level 3
Reason:

• make same as "Two sum Problem" as @ajay-dhangar (you ) suggested
• added 4 Approach

[ajay-dhangar]

Done