FisherYates费雪耶兹随机置乱算法

 public class FisherYates {

     public static void main(String[] args) {
         int[] arr = new int[10];
         // 初始有序数组
         System.out.println("初始化有序数组：");
         for (int i = 0; i < arr.length; i++) {
             arr[i] = i + 1;
             System.out.print(" " + arr[i]);
         }
         // 费雪耶兹置乱算法
         System.out.println("\n" + "费雪耶兹置乱算法+随机数：");

         for (int j = arr.length - 1; j > 0; j--) {

             int random = (int) (Math.random() * 10);
             System.out.print(" "+random);
             int temp = arr[j];
             arr[j] = arr[random];
             arr[random] = temp;
         }
         System.out.println("\n"+"置乱后的数组:");
         for (int i : arr) {
             System.out.print(" "+i);
         }

     }

 }