nkrvavica / adventofcode2018 Goto Github PK

    def match(s1, s2):
        """ Checks if two string differ by exactly one character at the same
        position """
        check = [False, -1]
        for i in range(len(s1)):
            if s1[:i] == s2[:i] and s1[i] != s2[i] and s1[i+1:] == s2[i+1:]:
                check = [True, i]
                break
        return check