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zahash/non_repeating_character_set_method.py

Last active January 3, 2019 12:25
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non_repeating_character_set_method.py
#@time_it
def set_method(st):
s = set()
repeat = set()
for letter in st:
if letter in s:
repeat.add(letter)
else:
s.add(letter)
return s-repeat
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