KOREATECH 1098: 첫 유일 문자 찾기

Link : judge.koreatech.ac.kr/problem.php?id=1098

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Python

from sys import stdin
 
quest_cnt = int(stdin.readline().strip())
 
for _ in range(quest_cnt):
    data = dict()
    data_arr = stdin.readline().strip()
    for idx, s in enumerate(data_arr):
        if s not in data:
            data[s] = [1, idx]
        else:
            data[s][0] += 1
    if len(data) == 0:
        print('-1')
    else:
        for idx, key in enumerate(data):
            if data[key][0] == 1:
                print(data[key][1])
                break
        else:
            print('-1')

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