免責事項:この記事はブロガーオリジナル記事です、続くBY-SAのCC 4.0を著作権契約、複製、元のソースのリンクと、この文を添付してください。
import java.io.*;
import java.util.Scanner;
public class Q10 {
public static void main(String[] args)
throws FileNotFoundException {
// TODO Auto-generated method stub
Scanner input = new Scanner (new File("/Users/apple/Documents/Class Folders/Java/Lab6/Q10.txt"));//读取文件
int times = 1;
int miles = 0;
String kind ="x";
int sum = 0;
while(input.hasNextLine()) {
String line = input.nextLine();
Scanner lineScan = new Scanner (line);
if(lineScan.hasNextInt()) {
//这里是读取第一位为整数的情况
miles = lineScan.nextInt();
if (kind.equals("firstclass")) {
//kind已在上一行的读取中赋值
times = 2;
}else if(kind.equals("coach")) {
times=1;
}else {
times=0;
}
sum=sum+times*miles;
}
while(lineScan.hasNext()) {
kind = lineScan.next();
if(lineScan.hasNextInt()) {
//仅输入后一位有整数的情况,避免末行数字无法读取
miles = lineScan.nextInt();
if (kind.equals("firstclass")) {
times = 2;
}else if(kind.equals("coach")) {
times=1;
}else {
times=0;
}
sum=sum+times*miles;
}
}
}
System.out.println(sum);//打印结果
}
}