Binary to Text (ASCII) Conversion
Description:
Write a function that takes in a binary string and returns the equivalent decoded text (the text is ASCII encoded).
Each 8 bits on the binary string represent 1 character on the ASCII table.
Note: In the case of an empty binary string your function should return an empty string.
using System;
using System.Collections.Generic;
using System.Linq; public static class Kata
{
public static string BinaryToString(string binary)
{
int count = binary.Length / ;
string tmp = string.Empty;
List<char> list = new List<char>();
for (int i = ; i < count; i++)
{
tmp = binary.Substring(i * , );
list.Add((char)(Convert.ToInt32(tmp,)));
}
return string.Join(string.Empty,list);
}
}
其他人的解法：
binary.Split(8)的用法,通过this关键字对string类进行了扩展，增加了扩展方法Split(int n)
IEnumerable<string>和yield的用法
Convert.ToChar的用法
using System;
using System.Linq;
using System.Collections.Generic; public static class Kata
{
public static string BinaryToString(string binary)
{
return string.Join("", binary.Split().Select(s => Convert.ToChar(Convert.ToInt32(s, ))));
} static IEnumerable<string> Split(this string s, int size)
{
for (int i = ; i < s.Length; i += size) {
yield return s.Substring(i, Math.Min(size, s.Length - i));
}
}
}
Encoding.GetString 方法 (Byte[])
using System;
using System.Text;
using System.Collections.Generic; public static class Kata
{
public static string BinaryToString(string binary)
{
List<Byte> byteList = new List<Byte>();
for (int i = ; i < binary.Length; i += )
byteList.Add(Convert.ToByte(binary.Substring(i, ), ));
return Encoding.ASCII.GetString(byteList.ToArray());
}
}
上面版本的装逼写法
using System;
using System.Text;
using System.Linq; public static class Kata
{
public static string BinaryToString(string binary)
{
return Encoding.ASCII.GetString(Enumerable.Range(, binary.Length / )
.Select(i => binary.Substring(i * , ))
.Select(s => Convert.ToByte(s, )).ToArray());
}
}