乘坐北京地铁费用计算

    package com.pc_psp.controller;
    
    import java.util.Calendar;
    
    
    public class test {
    public static void main(String[] args) {
        Calendar cal = Calendar.getInstance();
        int year = cal.get(Calendar.YEAR);
        int month = cal.get(Calendar.MONTH )+1;//获取当前年月
        int dates = getDates(year,month);//计算当前年当前月需要工作多少天 (乘车次数以2次进出站为计算依据)
        System.out.println(year+"年"+month+"月"+"你需要上"+dates+"天班");
    
        Double a=7.0;//单程票价(接口可根据实际情况传值)
        Double c=0.0;
    
        String speak="";
        for (int i = 0; i <dates; i++) {
            for (int j = 0; j <2; j++) {
                if(c>=100.0){
                    if(c>=150.0){
                        if(c>=400.0){
                            c+=a;
                            speak="超过400不打折";
                        }else{
                            c+=a*0.5;
                            speak="打五折";
                        }
                    }else{
                        c+=a*0.8;
                        speak="打八折";
                    }
                }else{
                    c+=a;
                    speak="正常";
                }
    
            }
            System.out.println("---第"+(i+1)+"天--"+speak+"--"+String.format("%.2f", c));
        }
        System.out.println("当月乘坐地铁总共花费:"+String.format("%.2f", c)+"元");
    }
    //计算当前年月工作日
    private static int getDates(int year, int month){
       int dates=0;
    
        Calendar cal = Calendar.getInstance();
        cal.set(Calendar.YEAR, year);
        cal.set(Calendar.MONTH,  month - 1);
        cal.set(Calendar.DATE, 1);
    
        while(cal.get(Calendar.YEAR) == year &&
                cal.get(Calendar.MONTH) < month){
            int day = cal.get(Calendar.DAY_OF_WEEK);
    
            if(!(day == Calendar.SUNDAY || day == Calendar.SATURDAY)){
                dates++;
            }
            cal.add(Calendar.DATE, 1);
        }
        return dates;
    
    }
    }