Last active
August 29, 2015 13:57
-
-
Save adammenges/9611654 to your computer and use it in GitHub Desktop.
This file contains bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
from collections import defaultdict | |
def isUnique(string): | |
seen = defaultdict(lambda: False) | |
for x in string: | |
if not seen[x]: seen[x] = True | |
else: return False | |
return True |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment