c#循环左移字符示例

循环左移字符例如：abcde循环左移2个字符就是cdeab

using system;
using system.collections.generic;
using system.linq;
using system.text;

namespace 循环左移
{
    class program
    {
         static string reverse(  char[] char2, int i, int j)
        {

            for (int begin=i,end=j;begin < end; begin++, end--)
            {
                char temp = char2[begin];
                char2[begin] = char2[end];
                char2[end] = temp;
            }
            return new string(char2);
        }
        static string leftshift( string str,int i ,int j)
        {
            char[] char1 = str.tochararray();
            reverse( char1,0,i-1);
            reverse( char1,i,j-1);
            reverse( char1, 0, j - 1);
            return new string(char1);
        }
        static void main(string[] args)
        {
            console.writeline("请输入一个字符串：");
            string mystring = convert.tostring(console.readline());
            int length = mystring.length;
            console.writeline("请输入你要左移的位数，不要超过字符串长度"+length);
            int n = convert.toint32(console.readline());
            string str=leftshift(mystring, n, length);
            console.writeline(str);
            console.writeline();
            console.readkey();
        }
    }
}