Duplicates in array with 2 different approach

[shresth12-jain]

What was changed?

Checklist

• Added description of change.
• I acknowledge that all my contributions will be made under the project's license.

Program Request

• Added file name matches File name guidelines mentioned in Contributing guidelines
• Updated documentation OR created an issue for someone else to update the documentation.

Bug Fix

• Bug is now fixed and program now behaves as expected.

Documentation Update

• Documenation matches format mentioned in Contributing guidelines
• If applicable, referenced sources have been linked.

Program Improvement

• The improvements made are not just visual and actually makes the program more efficient.

Notes: