1 /// <summary>
2 /// 随机排列字符串
3 /// </summary>
4 /// <param name="sNumber">需要排列的字符串</param>
5 /// <returns>排列后的字符串</returns>
6 public static string ArrangeNumber(string sNumber)
7 {
8 int len = sNumber.Length;
9 char[] A = new char[len];
10 char[] B = new char[len];
11 int num = 0;
12 int i, j;
13 //把字符串中的字符放到数组A中
14 for (i = 0; i < A.Length; i++)
15 A[i] = sNumber[i];
16 Random random = new Random();
17 //获取随机数，对数组A中的元素重新随机排列，放到数组B中
18 for (i = 0, j = A.Length - 1; i < A.Length; i++, j--)
19 {
20 //获取一个0到j之间的随机数
21 num = random.Next(0, j);
22 //为B[i]赋值
23 B[i] = A[num];
24 //交换A[j]于A[num]的值，使得下次取随机数num的时候不再重复
25 A[num] = A[j];
26 A[j] = B[i];
27 }
28 //把字符型数组重新组成一个字符串
29 string resultStr = new string(B);
30 //返回随机排列后的字符串
31 return resultStr;
32 }
