小算法 将一个字符串分割成等长的几段

public static string[] SplitStringIntoMultipart( string input , int eachCount )
  {
   if( input.Length == 0 )
    return new string[0];
   if( input.Length <= eachCount )
    return new string[1]{input};
   int partNum;
   if( input.Length % eachCount == 0 )
    partNum = input.Length / eachCount;
   else
    partNum = input.Length / eachCount + 1;
   
   string[] result = new string[partNum];
   for( int i = 0; i < partNum - 1; i++ )
    result[i] = input.Substring( i * eachCount, eachCount);

 

   result[partNum-1] = input.Substring( ( partNum - 1 ) * eachCount );
   return result;
   
  }