java专项练习(卖机票)

package 专题练习;

import java.util.Scanner;

public class sellplaneticket {
    //此练习题依照itheima视频所写,题目是黑马给的,代码是本人所写,不喜勿喷,此博客只是个人分享学习经验而作
    /*需求: 机票价格按照淡季旺季,头等舱和经济舱收费,输入机票原价,月份和舱型
    按照规则计算机票价格: 旺季(5-10月)头等舱9折,经济舱8.5折,淡季(11-4月)头等舱7折,经济舱6.5折*/

    public static void main(String[] args) {
        String plane_type = type_plane();
        //就差个判断了
        plane_judgements(plane_type);
        //如果是经济舱 就用经济舱总求(总求已经直接可以把值打印出来了)
        //同理头等舱就用头等舱总求
    }
    //month错误终止
    public static int month_po(int month){
        if(month > 12){
            return -1;
        }
        return 1;
    }

    //判断舱型
    public static void plane_judgements(String plane_type) {

        if (plane_type.equals("经济舱") ) {
            economics();
        } else if(plane_type.equals("头等舱")){
            First();
        }else{
            System.out.println("无此舱型");
        }
    }

    //录入舱型
    public static String type_plane() {
        System.out.println("录入舱型:");
        Scanner k = new Scanner(System.in);
        String cabin_type = k.next();
        return cabin_type;
    }


    //头等舱总求
    public static void First() {
        int month = month_in();
        if(month_po(month) == -1) {
            System.out.println("月份错误");
            return;
        }
        double oldprice = oldrice_in();

        if (low_high_seasons(month).equals("旺季")) {
            System.out.println("头等舱旺季票价为:" + First_Class_Peak_Season(oldprice));
        } else  {
            System.out.println("头等舱淡季票价为:" + First_Class_Off_Season(oldprice));
        }
    }

    //经济舱总求
    public static void economics() {
        int month = month_in();
        if(month_po(month) == -1) {
            System.out.println("月份错误");
            return;
        }
        double oldprice = oldrice_in();
        if (low_high_seasons(month).equals("旺季")) {
            System.out.println("经济舱旺季票价为:" + Economy_Class_Peak_Season(oldprice));
        } else {
            System.out.println("经济舱淡季票价为:" + Economy_Class_Off_Season(oldprice));
        }
    }

    //录入月份
    public static int month_in() {
        System.out.println("录入月份:");
        Scanner k = new Scanner(System.in);
        int month = k.nextInt();
        return month;
    }

    //录入票价
    public static double oldrice_in() {
        System.out.println("录入原票价:");
        Scanner k = new Scanner(System.in);
        double oldprice = k.nextInt();
        return oldprice;
    }

    //还要分辨是淡季还是旺季
    public static String low_high_seasons(int month) {
        if (month >= 1 && month <= 4 || month >= 11 && month <= 12) {
            return "淡季";
        } else if(month >= 5 && month <= 10) {
            return "旺季";
        }
        else
            return "输入错误";
    }

    //我们可以分别写四个方法写经济舱的旺淡季和头等舱的旺淡季票价
    //经济舱旺季
    public static double Economy_Class_Peak_Season(double oldprice) {
        return oldprice * 0.85;
    }

    //经济舱淡季
    public static double Economy_Class_Off_Season(double oldprice) {
        return oldprice * 0.65;
    }

    //头等舱旺季
    public static double First_Class_Peak_Season(double oldprice) {
        return oldprice * 0.9;
    }

    //头等舱淡季
    public static double First_Class_Off_Season(double oldprice) {
        return oldprice * 0.7;
    }
}