第五章第九题（找出分数最高的前两个学生）(Find the two highest scores)

*5.9（找出分数最高的前两个学生）编写程序，提示用户输入学生的个数、每个学生的名字及其分数，最后显示获得最高分的学生和第二高分的学生。使用Scanner类的next()方法而不是nextLine()方法来读取名字。

*5.9 (Find the two highest scores) Write a program that prompts the user to enter the number of students and each student’s name and score, and finally displays the names of the students with the highest and second-highest scores.Use the next() method in the Scanner class to read a name, rather than using the nextLine() method.

下面是参考答案代码:

import java.util.*;

public class FindTheTwoHighestScoresQuestion9 {
	public static void main(String[] args) {
		int numberOfStudent;
		double firstHighestScore = 0, secondHighestScore = 0, tempScore;
		String firstStudentName = "", secondStudentName = "", tempName;
		
		Scanner inputScanner = new Scanner(System.in);
		System.out.print("Enter the number of the students:");
		numberOfStudent = inputScanner.nextInt();
		
		if(numberOfStudent > 0)
		{
			for(int i = 1;i <= numberOfStudent;i++)
			{
				System.out.print("Enter the student's name: ");
				tempName = inputScanner.next();
				System.out.print("Enter the student's score: ");
				tempScore = inputScanner.nextDouble();
				
				if(tempScore > firstHighestScore)
				{
					secondStudentName = firstStudentName;
					secondHighestScore = firstHighestScore;
					firstStudentName = tempName;
					firstHighestScore = tempScore;
					continue;
				}
				
				if(tempScore > secondHighestScore)
				{
					secondStudentName = tempName;
					secondHighestScore = tempScore;
				}
			}
			System.out.println("The name of the student with the highest score is " + firstStudentName);
			System.out.println("The name of the student with the second-highest score is " + secondStudentName);
		}
		else
			System.out.println("The number of the students is less than or equals to 0n"
								+ "Invalid input");
		
		inputScanner.close();
	}
}

运行效果：

注：编写程序要养成良好习惯
1.文件名要用英文，具体一点
2.注释要英文
3.变量命名要具体，不要抽象（如:a,b,c等等），形式要驼峰化
4.整体书写风格要统一（不要这里是驼峰，那里是下划线，这里的逻辑段落空三行，那里相同的逻辑段落空5行等等）
5.普通变量，方法名要小驼峰，类名要大驼峰，常量要使用全部大写加上下划线命名法
6.要学习相应的代码编辑器的一些常用快捷键，如：快速对齐等等

最后

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