Hackerrank > Algorithms > Strings > String Construction

January 7, 2017 - Hackerrank

Language: Python

import sys

n = int(raw_input().strip())
for a0 in xrange(n):
    s = raw_input().strip()
    pset = set()
    p = ''
    res = 0
    for i in s:
        if i not in pset:
            res += 1
    print res


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