题解 | 删除字符串中出现次数最少的字符

TITLE = "HJ7 删除字符串中出现次数最少的字符"

def solve():
    input_str = input().strip()
    count_least_char, count_dict = count_least(input_str)
    result = delete_least_char(input_str, count_least_char, count_dict)
    print(result)

def count_least(s: str) :
    count_dict = {}
    for i in range(len(s)):
        char = s[i]
        if char in count_dict:
            count_dict[char] += 1
        else:
            count_dict[char] = 1
    return min(count_dict.values()), count_dict

def delete_least_char(s: str, count_least_char: int, count_dict: dict) -> str:
    result = ""
    for char in s:
        if count_dict[char] != count_least_char:
            result += char
    return result

def main():
    solve()

if __name__ == "__main__":
    main()

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