发牌小算法

给定一个数组，数组里面都是牌，一次发完牌，不能重复。

 

import java.util.Arrays;


public class GiveCards{

    public static void main(String[] args) {
        giveCards(10);
    }

    public static int[] giveCards(int size)
    {
        int[] arr = new int[size];
        for(int i = 0; i < arr.length; i++)//init cards
        {
            arr[i] = i;
        }
        for(int i = arr.length -1 ; i > 0; i--)
        {
            int random = (int)(Math.random() * i);
            //swap arr[random] and the last one 
            int temp = arr[random];
            arr[random] = arr[i];
            arr[i] = temp;
            
            System.out.println("the give card is:"+arr[i] );
        }
    
        System.out.println(Arrays.toString(arr));
        return arr;
        
    }
}