下面为C#实现的各个进制互转等帮助类方法
/// <summary>
/// 二进制字符串转byte[]
/// </summary>
/// <param name="binaryStr"></param>
/// <returns></returns>
public static byte[] ConvertBinaryStringToBytes(string binaryStr)
{
binaryStr = binaryStr.Replace("-", string.Empty);
binaryStr = BinaryLengthAppendTo8(binaryStr);
byte[] resultantArray = new byte[binaryStr.Length / 8]; for (int i = 0; i < resultantArray.Length; i++)
{
var str = binaryStr.Substring(i * 8, 8);
resultantArray[i] = Convert.ToByte(str, 2);
} return resultantArray;
} /// <summary>
/// 二进制字符串转base64
/// </summary>
/// <param name="binaryStr"></param>
/// <returns></returns>
public static string ConvertBinaryStringToBase64(string binaryStr)
{
var byteArr = ConvertBinaryStringToByteArr(binaryStr); return Convert.ToBase64String(byteArr);
} /// <summary>
/// 10进制转二进制字符串("100010010"格式)
/// </summary>
/// <param name="num"></param>
/// <returns></returns>
public static string ConvertDoubleToString(double num)
{
List<string> binary = new List<string>(); while (num > 0)
{ double tmp = num;
num = Math.Floor(tmp / 2);
binary.Add((tmp % 2).ToString());
}
binary.Reverse(); return string.Join(string.Empty, binary);
} /// <summary>
/// btye[]转二进制字符串
/// </summary>
/// <param name="bindata"></param>
/// <returns></returns>
public static string ConvertBinaryToString(byte[] bindata)
{
StringBuilder sb = new StringBuilder(); for (int i = 0; i < bindata.Length; i++)
{ string hv = Convert.ToString(bindata[i], 2);
hv = BinaryLengthAppendTo8(hv);
sb.Append(hv);
} return sb.ToString();
} public static byte[] ConvertDoubleToBytes(double num)
{ return ConvertBinaryStringToByteArr(ConvertDoubleToString(num));
} /// <summary>
/// 转换bindata到十进制double(强转溢出后返回-1)
/// </summary>
/// <param name="bindata"></param>
/// <returns></returns>
public static double ConvertBinaryToDouble(byte[] bindata)
{ string binary = ConvertBinaryToString(bindata); return ConvertBinaryStrToDouble(binary);
} /// <summary>
/// 转换"10101010"到十进制double(强转溢出后返回-1)
/// </summary>
/// <param name="binaryStr"></param>
/// <returns></returns>
public static double ConvertBinaryStrToDouble(string binaryStr)
{ try
{ int binLen = binaryStr.Length; double sum = 0; for (int i = 0; i < binLen; i++)
{ if (binaryStr[i] == '1')
{
sum += Math.Pow(2, binLen - i - 1);
}
} if (double.IsInfinity(sum))
{ throw new Exception("溢出");
} return sum;
} catch
{ return -1;
}
} private static string BinaryLengthAppendTo8(string binaryStr)
{ int m = binaryStr.Length % 8; if (m != 0)
{
StringBuilder sb = new StringBuilder(); for (int i = 0; i < 8 - m; i++)
{
sb.Append("0");
}
binaryStr = sb.ToString() + binaryStr;
} return binaryStr;
}
作者：太白菜Rennbon
链接：https://www.jianshu.com/p/5bb02d0641e8
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