empty public class Paixu { public static void main(String[] args) { //选择排序 int[] a = {1,3,5,7,6,4,2}; for (int i = 0; i < a.length-1 ; i++) { for (int j = 0; j < a.length-1-i ; j++) { if(a[j] < a[j+1]){ int k = a[j]; a[j] = a[j+1]; a[j+1] = k; } } } System.out.println("排序后："); for (int i : a) { System.out.print(i+" "); } } } empty public class ListDemo { public static void main(String[] args) { List list = new ArrayList (); list.add(new Employee("Tom",24,3000)); list.add(new Employee("Jack",24,4000)); list.add(new Employee("Lily",26,8000)); list.add(new Employee("Jim",25,6000)); list.add(new Employee("Dabao",26,8000)); list.add(new Employee("Xiaobao",27,6000)); for (int i = 0; i < list.size() -1; i++) { for (int j = 0; j < list.size() - 1 - i; j++) { Employee e1 = list.get(j); Employee e2 = list.get(j+1); //比工资 if(e1.getSalary() < e2.getSalary()){ list.set(j, e2); list.set(j+1, e1); }else if(e1.getSalary() == e2.getSalary()){//当工资相等 //比年龄 if(e1.getAge() < e2.getAge()){ list.set(j, e2); list.set(j+1, e1); }else if(e1.getAge() == e2.getAge()){//当年龄相等 if(e1.getName().compareTo(e2.getName()) > 0){ list.set(j, e2); list.set(j+1, e1); } } } } } for (Employee e : list) { System.out.println(e.getName()+"：年龄"+e.getAge()+"岁，收入 "+e.getSalary()+"元"); } } }
