package com.mohuanan.exercise;

public class Exercise {
    public static void main(String[] args) {
        int[] arr = {1, 2, 3, 4, 5, 6, 7, 8, 8};  //格式化快捷键 CTRL 加 Alt 加 L键

        // F1截图  F3贴图
        //调用 copyOfRange

        int[] ints = copyOfRange(arr, 3, 7);
        for (int i = 0; i < ints.length; i++) {
            System.out.print(ints[i]+ " ");
        }
        System.out.println();

    }

    public static int[] copyOfRange(int[] arr,int from,int to){

        //动态定义一个数组
        int[] newArr = new int[to-from];
        for (int i = from; i < to; i++) {
            newArr[i-from] = arr[i];
        }
        return newArr;
    }
}

运行结果: