黑马JAVA P64 编程思维训练 ；案例4：数组的复制

package com.itheima.Test1;

import java.io.PushbackInputStream;



public class Test4 {
    public static void main(String[] args) {
        int [] arr1 = {11, 22, 33, 44};
        //int[] arr2 = arr1; //没有完成了数组复制。
        int[] arr2 = new int[arr1.length];

        copy(arr1, arr2);

        printArray(arr1);
        printArray(arr2);
    }

    public static void printArray(int [] arr){
        System.out.print("[");
        for (int i = 0; i < arr.length; i++) {
            System.out.print(i == arr.length - 1 ? arr[i] : arr[i] +",");
        }
        System.out.println("]");
    }

    public static void copy(int[] arr1, int[] arr2){
        //正式完成元素的复制
        for (int i = 0; i < arr1.length; i++) {
            arr2[i] = arr1[i];
        }
    }
}