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replaced http://codegolf.stackexchange.com/ with https://codegolf.stackexchange.com/

edited Apr 13, 2017 at 12:39

Mathematica, 33 bytes

0<=##||##>=0&@@ToCharacterCode@#&

Based on this tip. Unfortunately, I have to use ToCharacterCode instead of Characters, because <= and >= don't compare strings.

answered Jan 30, 2017 at 21:48