01编码

思路

转成字符串

with open("./1.txt","r")as f2r:
    contents = f2r.readlines()
    string1=""
    for content in contents:
        content = content.replace("\n","")
        print(content)
        if len(content)==7:
            string1+=content
        elif len(content)==6:
            content=content+"0"
            string1+=content
        
print(string1)

反转

格雷码

def decode_custom_gray(binary_chunks):
    """
    将自定义格雷编码的二进制块解码为ASCII字符串

    参数:
        binary_chunks: 二进制字符串列表，每个字符串代表一个编码块

    返回:
        解码后的ASCII字符串
    """
    # 定义格雷码到四进制的映射规则
    GRAY_TO_BASE4 = {
        '00': '0',
        '01': '1',
        '11': '2',
        '10': '3'
    }

    result = []

    for chunk in binary_chunks:
        # 跳过非偶数长度的块
        if len(chunk) % 2 != 0:
            continue

        try:
            # 将二进制块分割为2位一组
            pairs = [chunk[i:i + 2] for i in range(0, len(chunk), 2)]

            # 转换为四进制数字
            base4_digits = []
            for pair in pairs:
                if pair in GRAY_TO_BASE4:
                    base4_digits.append(GRAY_TO_BASE4[pair])
                else:
                    raise ValueError(f"无效的二进制对: {pair}")

            # 将四进制转换为十进制
            decimal_value = int(''.join(base4_digits), 4)

            # 只保留可打印ASCII字符(32-126)
            if 32 <= decimal_value <= 126:
                result.append(chr(decimal_value))
            else:
                result.append('?')

        except (ValueError, KeyError):
            result.append('?')  # 无效的二进制对
        except Exception:
            result.append('?')  # 其他转换错误

    return ''.join(result)


def main():
    # 测试数据
    binary_chunks = [
        '01010110', '01110101', '01111000', '01110010', '100000', '01111001', '100010', '01011010', '01010100', '100000', '01011010', '01111000', '100010', '01100111', '01110101', '100001', '01011010', '01100100', '01111100', '01100011', '100010', '01110101', '110001', '110001', '110001', '110001'
    ]

    decoded = decode_custom_gray(binary_chunks)
    print("解码结果:", decoded)


if __name__ == "__main__":
    main()

转二维码

from PIL import Image
MAX = 600
#字符串长度
pic = Image.new("RGB",(MAX, MAX))
str = "数据省略"
i=0
for y in range (0,MAX):
    for x in range (0,MAX):
        if(str[i] == '1'):
            pic.putpixel([x,y],(0, 0, 0))
        else:
            pic.putpixel([x,y],(255,255,255))
        i = i+1
pic.show()
pic.save("flag.png")

例题

上海市赛（两位数）

更新: 2025-08-17 10:31:16
原文: https://www.yuque.com/chaye-apqbl/vsc85q/gwgpmhgagfbyy5g5