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用 Python 重写 Java 代码同样的位移取反操作, 遇到问题, 请帮忙看看

 3 years ago
source link: https://www.v2ex.com/t/802185
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V2EX  ›  Python

用 Python 重写 Java 代码同样的位移取反操作, 遇到问题, 请帮忙看看

  l4ever · 15 小时 30 分钟前 · 563 次点击 
inputStream = new DataInputStream(new BufferedInputStream(new FileInputStream(srcFile), 1024 * 8));
            byte[] vb = new byte[7];

            if (inputStream.read(vb, 0, 6) > 0) {
                for (int i = 0; i < 6; i++) {
                    vb[i] = (byte) ((0xFF & vb[i]) >> 4 | (0xFF & vb[i]) << 4);
                    vb[i] = (byte) ~vb[i];
                }
                vb[6] = 0;
            }

            version = new String(vb, 0, vb.length - 1);

def decode():
    version_byte = b'\x9a\xac\x1d\xfc\xfc\xfc'
    result_bytes = bytearray()

    for i, value in enumerate(version_byte):
        version_int = value
        version_int = (version_int >> 4 | version_int << 4)
        version_int = ~version_int
        print(f'{version_int} {version_int}')
        result_bytes.insert(i, version_int)

帮忙看看 java 的代码, 我用 python 实现不了同样的功能


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