1 import java.sql.SQLOutput;
2 import java.util.Scanner;
3 //数组的使用
4 public class test {
5 public static void main(String[] args)
6 {
7 int[] arrays = {1,2,3,4,5};
8 //for_each循环
9 for (int array : arrays) {//使用时可以写为arrays.for回车
10 System.out.print(array);
11 }
12 System.out.println("//for_each循环===========");
13 //可以作为参数
14
15 System.out.print("max = "+max(arrays));
16 System.out.println(" //可以作为参数===========");
17
18 //可以作为返回值类型
19 for (int i : reverse(arrays)) {
20 System.out.print(i);
21 }
22 System.out.println("//可以作为返回值类型===========");
23 }
24 public static int max(int[] arrays){
25 int max = arrays[0];
26 for (int i = 1; i < arrays.length; i++) {
27 if(arrays[i]>max){
28 max = arrays[i];
29 }
30 }
31 return max;
32 }
33 //反转数组
34 public static int[] reverse(int[] arrays){
35 int[] ret = new int[arrays.length];
36 int n = arrays.length-1;
37 for (int i = 0; i < arrays.length; i++) {
38 ret[i] = arrays[n];
39 n--;
40 }
41 return ret;
42 }
43 }
