Create 0560 - subarray-sum-equals-k.md

[katarianikita2003]

Add Solution to the leetcode problem 560 - SUbarray Sum equals K

Related Issue

Fixes #2043

Description

Given an array of integers nums and an integer k, return the total number of subarrays whose sum equals to k.

A subarray is a contiguous non-empty sequence of elements within an array.

Type of PR

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

Checklist

• I have performed a self-review of my code.
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[Include any additional information or context that might be helpful for reviewers.]

Resources for Guidance

Please read the following resources before submitting your contribution:

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Resources for DSA Features on Our Site:

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[github-actions]

Great job, @katarianikita2003! 🎉 Thank you for submitting your pull request to CodeHarborHub. We appreciate your contribution and enthusiasm! Our team will review it soon. If you have any questions or need further assistance, feel free to reach out. Thanks for contributing!

[deepsource-io]

Here's the code health analysis summary for commits d905b0c..90912e3. View details on DeepSource ↗.

Analysis Summary

Analyzer	Status	Summary	Link
JavaScript	✅ Success		View Check ↗

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[ajay-dhangar]

Done