在我的字符串末尾有4个相同的垃圾字符

def remove_garbage_chars(string):
    garbage_chars = string[-4:]  # 获取字符串末尾的4个字符
    if garbage_chars == garbage_chars[0] * 4:  # 判断是否为相同垃圾字符
        return string[:-4]  # 去除末尾4个字符
    else:
        return string

# 示例用法
string = "在我的字符串末尾有4个相同的垃圾字符!!!!"
result = remove_garbage_chars(string)
print(result)

public class RemoveGarbageChars {
    public static String removeGarbageChars(String string) {
        String garbageChars = string.substring(string.length() - 4);  // 获取字符串末尾的4个字符
        if (garbageChars.equals(String.valueOf(garbageChars.charAt(0)).repeat(4))) {  // 判断是否为相同垃圾字符
            return string.substring(0, string.length() - 4);  // 去除末尾4个字符
        } else {
            return string;
        }
    }

    // 示例用法
    public static void main(String[] args) {
        String string = "在我的字符串末尾有4个相同的垃圾字符!!!!";
        String result = removeGarbageChars(string);
        System.out.println(result);
    }
}