feat : added reverse number method

[dev-madhurendra]

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Describe your change:

• Add an algorithm?
• Fix a bug or typo in an existing algorithm?
• Documentation change?

Checklist:

• I have read CONTRIBUTING.md.
• This pull request is all my own work -- I have not plagiarized.
• I know that pull requests will not be merged if they fail the automated tests.
• This PR only changes one algorithm file. To ease review, please open separate PRs for separate algorithms.
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[raklaptudirm]

@appgurueu I think this algorithm falls in the trivial category that we discussed in the discord previously, so I don't think it will be a good addition to the repo. What is your opinion?

[appgurueu]

Well it is pretty trivial, but I think it is useful to demonstrate the split-transform-join pattern for working around the immutability of strings in JavaScript.

Arguably this shouldn't be called "reverse number" though - it isn't really specific to numbers - but it should be "reverse string" which we already have (but not using JS's reverse, which would be more concise). I missed this in my review.

@dev-madhurendra please just shorten the existing linear time string reversal code to a one-liner.

[dev-madhurendra]

Well it is pretty trivial, but I think it is useful to demonstrate the split-transform-join pattern for working around the immutability of strings in JavaScript.

Arguably this shouldn't be called "reverse number" though - it isn't really specific to numbers - but it should be "reverse string" which we already have (but not using JS's reverse, which would be more concise). I missed this in my review.

@dev-madhurendra please just shorten the existing linear time string reversal code to a one-liner.

@appgurueu It is already one linear

Well it is pretty trivial, but I think it is useful to demonstrate the split-transform-join pattern for working around the immutability of strings in JavaScript.

Arguably this shouldn't be called "reverse number" though - it isn't really specific to numbers - but it should be "reverse string" which we already have (but not using JS's reverse, which would be more concise). I missed this in my review.

@dev-madhurendra please just shorten the existing linear time string reversal code to a one-liner.

@appgurueu I think it is already one linear.

[appgurueu]

What I'm saying is that this function should just be a string-, not a number reversal function. If someone wants to apply that to a number, they can do the conversions themselves. However, we already have that, so you should just clean up / simplify the existing code to a one-liner:
It is already linear-time, but it is not a one-liner: It is needlessly verbose as it manually does the array reversal rather than using JS's reverse built-in. It should be just str.split('').reverse().join('') (or [...str].reverse().join('')).