import java.util.Scanner;public class Sloution {        public static void main(String[] args) {            Scanner scanner=new Scanner(System.in);            System.out.println("请输入你的姓名");            String name=scanner.nextLine();            System.out.println("请输入上次的成绩");            int lasttime=scanner.nextInt();            System.out.println("请输入这次的成绩");            int thistime=scanner.nextInt();            float persent=100*(thistime-lasttime)/lasttime;            System.out.printf("%s本次的成绩提升率为%.2f%%",name,persent);