设计一个shuffle card

用了java. Random Class

1 package Random; 2 import java.util.*; 3  4 public class Solution { 5     static int cardNum = 10; 6     public int[] shuffle(int[] cards) { 7         //ArrayList
     
       res = new ArrayList
      
       (); 8         Random rnd = new Random(); 9         for(int i=0; i