查找字符串中出现次数最多的字符

def find_most_frequent_char(string):
    char_count = {}
    
    # 统计字符出现次数
    for char in string:
        if char in char_count:
            char_count[char] += 1
        else:
            char_count[char] = 1
    
    max_count = 0
    most_frequent_char = ''
    
    # 找出出现次数最多的字符
    for char, count in char_count.items():
        if count > max_count:
            max_count = count
            most_frequent_char = char
    
    return most_frequent_char

string = "abcaabccc"
most_frequent_char = find_most_frequent_char(string)
print("出现次数最多的字符是:", most_frequent_char)

出现次数最多的字符是: c