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len(set(zip)) solution in Clear category for Surjection Strings by Fermax
def isometric_strings(str1: str, str2: str) -> bool:
# Number of unique characters in str1 == number of unique combinations of str1 + str2 characters
return len(set(str1)) == len(set(zip(str1, str2)))
Jan. 17, 2019
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