二维数组的简单应用

package test;
/**
 * 数组求最大值最小值等操作
 */

import java.util.Random;

public class ArrUsing {
    public static void main(String[] args) {
        int[][] arr = new int[4][4];
        int min,max;
        min = 127;
        max = 0;
        Random r = new Random();
        for (int i =0; i<arr.length;i++ ){
            for(int j =0; j<arr[i].length;j++){
                arr[i][j]=r.nextInt(127);
                if (min>arr[i][j]){
                    min = arr[i][j];
                }
                if (max<arr[i][j]){
                    max = arr[i][j];
                }
            }
        }
        System.out.println("原随机数组为");
        for (int i =0; i<arr.length;i++ ){
            for(int j =0; j<arr[i].length;j++){
                System.out.print(arr[i][j]+"\t");
            }
            System.out.println();
        }
        System.out.println("输出能被3整除的数字");
        for (int i =0; i<arr.length;i++ ){
            for(int j =0; j<arr[i].length;j++){
                if(arr[i][j]%3 == 0){
                    System.out.print(arr[i][j]+"\t");
                }
            }
        }
        System.out.println();
        System.out.println("最大值为："+max+"\t"+"最小值为："+min+"\t");
    }
}