KOREATECH 1025: 단색이 좋아좋아

Link : judge.koreatech.ac.kr/problem.php?id=1025

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Python

from sys import stdin
 
quest_cnt = int(stdin.readline().strip())
 
for _ in range(quest_cnt):
    data = stdin.readline().strip()
    length = len(data)
    pres = 1
    max = 0
    if length != 1:
        for i in range(1, length):
            if data[i] == data[i - 1]:
                pres += 1
            else:
                if pres > max:
                    max = pres
                pres = 1
        if pres > max:
            max = pres
        pres = 1
        print(length - max)
    else:
        print('0')

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