题解 | #判断学生成绩等级#

import java.util.Scanner;

public class Main { public static void main(String[] args) { Scanner scanner = new Scanner(System.in); String grade =scanner.next();

    //write your code here......
    //方法一：使用swich-case判断
     switch(grade){
         case "A":
             System.out.println("优秀");
             break;
         case "B":
             System.out.println("良好");
             break;
         case "C":
             System.out.println("及格");
             break;
         case "D":
             System.out.println("不及格");
             break;
         default:
             System.out.println("未知等级");
     }
     
     //方法二：使用三元运算符以及equals方法
    System.out.println(grade.equals("A")?"优秀":grade.equals("B")?"良好":grade.equals("C")?"及格":grade.equals("D")?"不及格":"未知等级");
}

}