随机数

设计思路：生成随机数并将随机数分配到 char类型的数组中，再将char类型转换为int类型，计算并输出结果。

源程序代码

import java.util.Random;

import javax.swing.*;

public class Array1 {

       public static void main(String Args[])

       {

              int a[]=new int [10];

              int num = 0;

              String output="";

              for(int i=0;i<10;i++)

              {

                     a[i]=(int)(Math.random()*100);

              }

              for(int  element:a)

              {

                     output+=element+" ";

                  num+=element;

              }

                     JOptionPane.showMessageDialog( null,"随机数为"+output ,

                       "Initializing an Array with a Declaration",

                       JOptionPane.INFORMATION_MESSAGE );

                     JOptionPane.showMessageDialog( null,"和为"+num ,

                              "Initializing an Array with a Declaration",

                              JOptionPane.INFORMATION_MESSAGE );

                    

             

       }

}

结果截图：