Python3 代码

n = int(input())

for i in range (n):
    s = input()

    count = 0
    cc = ""
    max = 0 
    mc = ""
    for i in range (len(s)):
        if (s[i]) == cc:
            count += 1

        if s[i] != cc or i == len(s) - 1:
            if max < count:
                max = count
                mc = cc
            count = 1
            cc = s[i]

    print (mc, max)