package cn.ljs;

import java.util.Arrays;

public class ArrayDemo {

    public static void main(String [] args){

        int [] arr1 = {,,};

        int [] arr2 = {,,,,};

        System.out.println(Arrays.equals(arr1,arr2));   // 简单说比较两数组形状相同不

        System.out.println(Arrays.toString(arr1));   //  toString 

        Arrays.sort(arr2);

        System.out.println(Arrays.toString(arr2));

        Arrays.fill(arr1,-);    // 填充-1

        System.out.println(Arrays.toString(arr1));

        int index = Arrays.binarySearch(arr2,);   // 排序

        System.out.println(index);

        int [] b = Arrays.copyOf(arr1, arr1.length);   //copy 数组

        System.out.println(arr1 == b);

    }

}