Java练习：数组拷贝

package com.domain.hello;

import java.util.Random;

public class Test {
    public static void main(String[] args) {
        //数组拷贝
        int[] arr = {5, 8, 5, 2};
        int[] arr2 = new int[arr.length];

        copy(arr, arr2);

        printArr(arr);
        printArr(arr2);
        
    }

    public static void copy (int[] arr, int[] arr2) {
        for (int i = 0; i < arr.length; i++) {
            arr2[i] = arr[i];
        }
    }

    public static void printArr(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("]");
    }


}