2023.7.16

import java.sql.SQLOutput;
import java.util.Scanner;
//数组的使用
public class test {
    public static void main(String[] args)
    {
        int[] arrays = {1,2,3,4,5};
        //for_each循环
        for (int array : arrays) {//使用时可以写为arrays.for回车
            System.out.print(array);
        }
        System.out.println("//for_each循环===========");
        //可以作为参数

        System.out.print("max = "+max(arrays));
        System.out.println(" //可以作为参数===========");

        //可以作为返回值类型
        for (int i : reverse(arrays)) {
            System.out.print(i);
        }
        System.out.println("//可以作为返回值类型===========");
    }
    public static int max(int[] arrays){
        int max = arrays[0];
        for (int i = 1; i < arrays.length; i++) {
            if(arrays[i]>max){
                max = arrays[i];
            }
        }
        return max;
    }
   //反转数组
    public static int[] reverse(int[] arrays){
        int[] ret = new int[arrays.length];
        int n = arrays.length-1;
        for (int i = 0; i < arrays.length; i++) {
            ret[i] = arrays[n];
            n--;
        }
        return ret;
    }
}