删除字符串中出现次数最少的字符

单词和出现次数存入哈希表 -> 查找最小出现值 -> 查找相同次数单词 -> 删除

while True:
    try:
        strings = input().strip()
        temp = {}
        for i in strings:
            if temp.get(i):
                temp[i] += 1
            else:
                temp[i] = 1
        cnt = min(list(temp.values()))
        print('cnt:', cnt)
        print(temp)
        for key, val in temp.items():
            if val == cnt:
                strings = strings.replace(key, '')
        print(strings)

    except:
        break