Java数组07Aeeays类

Posted 2021-06-10 Leo

package com.Leo.array;

import java.util.Arrays;

public class ArrayDemo06 {
    public static void main(String[] args) {
        int [] a = {1,2,3,4,9090,31231,543,21,3,23};
//
//        System.out.println(a);//[I@28d93b30
//
//        //打印数组元素Arrays.toString
//        System.out.println(Arrays.toString(a));
//        printArray(a);
        Arrays.sort(a);//数组进行排序：升序
        System.out.println(Arrays.toString(a ));

        Arrays.fill(a,0);//数组填充
        System.out.println(Arrays.toString(a));
    }

    public static void printArray(int[] a){
        for (int i = 0; i <a.length ; i++) {
            if (i==0){
                System.out.print("[");
            }
            if (i==a.length-1){
                System.out.print(a[i]+"]");

            }else {
                System.out.print(a[i]+" ,");
            }

        }
    }
}