added .gitignore file

[tanyarajpal]

Related Issue

fixes #2075

• Info about Issue or bug fixes #2075

  Describe the changes you've made

A clear and concise description of what you have done to successfully close your assigned issue. Any new files? or anything you feel to let us know! added .gitignore file

Language Used:

[Mention the Language of Code]

Checklist:

• [ x] I have placed my code file in the (/Code) Folder e.g. If it's a Code in JAVA then I have placed my code pr_name.java file in (/Code/Java/) Directory.
• [ x] I have Added the Description, Approach, and Working of Code at the beginning of Code.
• [ x] I have added 2 or more Testcases at the Bottom side of the Code.
• [x ] I have Added Time and Space Complexity at the End of the Code.
• [ x] I have Explained the Variables use in Complexity e.g. O(n) where n is the length of an array.
• [x ] I have Updated the Readme Related to the Topics e.g., if the issue is regarding Matrix then Update the Readme.MD present in 2D_Array Folder.
• [ x] I have added Proper Comments in between the Code for Better Explanation.
• [ x] I have sorted the list of the Readme.MD where I have added the issue in the Alphabetical Order.

[github-actions[bot]]

AlgoTree team will review your PR soon. Take Care of Few of the Things where most contributors are missing out. @Tanya933 :)

[tanyarajpal]

@plazzy99 @rish-singhal @krishna-NIT @tarun26091999.Please review the PR

[github-actions[bot]]

Congratulations 🎉🎊, Your PR has been Merged and Thank you @Tanya933 for taking out your valuable time in order to contribute to AlgoTree. Looking forward for more such amazing contributions :)

[krishna-NIT]

@Tanya933 sec me kaam hore ab toh 😂 nice : 👍🏻