数组里面存person,然后按照年龄排序
1 package com.pang.array_demo; 2 3 public class Person { 4 5 String name; 6 int age; 7 String sex; 8 //空差构造 9 //满参构造 10 //get/set方法 11 //toString方法 12 }
1 package com.pang.array_demo; 2 3 import java.util.Arrays; 4 5 //数组里面存放person,然后按照年龄排序 6 public class Test { 7 public static void main(String[] args) { 8 9 Person[] arr = new Person[4]; 10 arr[0] = new Person("张三", 12, "男"); 11 arr[1] = new Person("李四", 4, "男"); 12 arr[2] = new Person("王五", 34, "男"); 13 arr[3] = new Person("赵六", 22, "男"); 14 ageSort(arr); 15 } 16 17 // 选择排序 18 public static void ageSort(Person[] arr) { 19 for (int i = 0; i < arr.length - 1; i++) { 20 for (int j = i + 1; j < arr.length; j++) { 21 if (arr[i].getAge() > arr[j].getAge()) { 22 Person p = arr[i]; 23 arr[i] = arr[j]; 24 arr[j] = p; 25 } 26 } 27 } 28 System.out.println(Arrays.toString(arr)); 29 } 30 }
[Person [name=李四, age=4, sex=男], Person [name=张三, age=12, sex=男], Person [name=赵六, age=22, sex=男], Person [name=王五, age=34, sex=男]]
