Swift translation

Swift translation kumited

It throws a fatalerror, as negative numbers are not in the domain of prefix.

Constants get elimitated in big-O notation O(3*n) is equivalent to O(n).

Your solution is actually an O(n^2) solution, due to the calls of firstIndex and lastIndex for each character. My solution is O(n) as it uses only constant time operations for each character. That doesn't really matter for smal examples like this, but for longer strings for larger alphabets, it will make a difference.

That did the trick. I belive I stumbled onto that fix once before but had forgotton about it. Thanks.

OK. I've made it private, thaough for some reason it seems to be trying to run the tests under Swift 4 when I go to publish, so the tests are failing on the Int.random(In:) functions in the test cases, which were added after v4, and the version selector is missing, keeping me from switching it back to Swift 5.

Whoops. Forgot to copy them over. Fixed.

Swift 5 translation kumited. Please review and approve if acceptable.

Swift 5 translation kumited. Please review and approve if accepable.

Swift 5 translation kumited. Please review and approve if acceptable.

Swift 5 translation kumited. Please review and approve if acceptable.

Swift translation kumited. Please review and approve if acceptable.

Swift translation kumited. Please review and approve if acceptable.

Swift translation added. Please review and approve if acceptable.