How do I implement a string comparison in Java that takes the same amount of time no matter whether they match or where a mismatch (if any) occurs?

Question

I want to implement a String comparison function that doesn\'t take a different amount of time depending on the number of characters that match or the position

Answer 1

You can do constant time string comparisons if you intern your strings. Then you can compare them with == operator resulting in a constant time equality check.

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