趣味编程之借书

 /*
  * 小明有5本书，要借给ABC三位小朋友，若每人每次只能借1本书，则可以有多少种不同借法？
  * 例：5本书编号：0，1，2，3，4
  */

 

 1             int[] books = new int[5];
 2             int count = 1;
 3             for (int i = 0; i < books.Length; i++)
 4             {
 5                 for (int m = 0; m < books.Length; m++)
 6                 {
 7                     if (m == i)
 8                         continue;
 9 
10                     for (int n = 0; n < books.Length; n++)
11                     {
12                         if (n == m || n == i)
13                             continue;
14 
15                         Console.WriteLine(count + "：" + i + " " + m + " " + n);
16                         count++;
17                     }
18                 }
19             }