This comment is hidden because it contains spoiler information about the solution
Actually, sorting identical items should be fast, so I think it's not sorting that's supposed to be banned, but quadratic solutions.
I didn't notice that there was a Haskell translation removed before: https://www.codewars.com/kata/find-the-unique-number-1/discuss#59469c2caa3b7379540000a4
Could you add some really huge array? For make solutions with sorting fail on timeout?
Can you add them in a fork?
Approved
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This comment is hidden because it contains spoiler information about the solution
Actually, sorting identical items should be fast, so I think it's not sorting that's supposed to be banned, but quadratic solutions.
I didn't notice that there was a Haskell translation removed before:
https://www.codewars.com/kata/find-the-unique-number-1/discuss#59469c2caa3b7379540000a4
Can you add them in a fork?
Approved