Removing Temp Variable

[imrahulkb]

Removed temp variable and implemented the swap functionality using the bitwise xor technique.

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Describe your change:

Modified the Swap Functionality by replacing temp variable with the Bitwise XOR Technique.

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[appgurueu]

Sorry, but this does not preserve behavior; the array need not consist out of 32-bit integers.

It would be an option to convert all swaps in this repo to [a, b] = [b, a] for consistency (though the temp var is fine as well, imo).