1 package com.pang.array_demo;
2
3 import java.util.Arrays;
4
5 public class Array_Demo {
6 public static void main(String[] args) {
7 int[] arr = { 1, 5, 3, 23, 3, 45 };
8 arraySort(arr);
9 arrayDesc(arr);
10 }
11 //正序
12 public static void arraySort(int[] arr) {
13 for (int i = 0; i < arr.length - 1; i++) {
14 for (int j = i+1 ; j < arr.length; j++) {
15 if (arr[i] > arr[j]) {
16 int t = arr[i];
17 arr[i] = arr[j];
18 arr[j] = t;
19 }
20 }
21 }
22 System.out.println(Arrays.toString(arr));
23 }
24 //倒序
25 public static void arrayDesc(int[] arr){
26 for (int i = 0; i < arr.length - 1; i++) {
27 for (int j = i+1 ; j < arr.length; j++) {
28 if (arr[i] < arr[j]) {
29 int t = arr[i];
30 arr[i] = arr[j];
31 arr[j] = t;
32 }
33 }
34 }
35 System.out.println(Arrays.toString(arr));
36 }
37 }
