布尔型数组列表中的chaning值

Question

我必须编写一个程序来显示一些摩托车，然后客户租一辆摩托车，并且这辆摩托车不再可用。然后，我必须记录租赁时间以及某人返回时的记录返还时间并计算成本。我是一个noob程序员。如果有人能够以简单的方式解释我如何完成这件事。我写过这样的东西。感谢您的时间。

Scanner s = new Scanner(System.in); 
byte numBikes = 15; 

boolean[] available = new boolean[numBikes]; 
String [] timeRented = new String [numBikes]; 
Arrays.fill(available , true); 


System.out.println("The following bikes are avaialable:\n"); 
for(byte b = 0; b <= numBikes - 1; b++) 
    if(available [b]== true){ 
     System.out.println(" Bike No" + (byte)(b+1)); 

    } 
System.out.print("Enter your bike number you want choose"); 
byte bikeNo = s.nextByte(); 

if (available[bikeNo - 1]== true) 
    available[bikeNo - 1] = false; 

System.out.println("The following bikes are avaialable:\n"); 
for(byte b = 0; b <= numBikes - 1; b++) 
    if(available [b]== true){ 
     System.out.println(" Bike No" + (byte)(b+1)); 
    } 

Answer 1

我做了一个样品给你我promp的计算成本的用户，因为我不知道你是怎么想计算成本，我不知道你的房租，但希望你可以改变它的字母b选择

import java.util.*; 
    public class Help 
    { 

    public static void main(String[] args) 
    { 
     Scanner scan = new Scanner(System.in); 
     int numBikes =15; 
     int availableBike=15; 
     int bikeFound=0; 

     boolean[] available = new boolean[numBikes]; 
     String[] timeRented = new String [numBikes]; 
     String[] returningTime = new String[numBikes]; 
     int[] calculateCost = new int[numBikes]; 
     Arrays.fill(available,true); 
     String choice=""; 
     do 
     { 
      System.out.println("What do you want to do zzz to quit?"); 
      System.out.println("a.rent a bike b. return a bike"); 
      choice = scan.nextLine(); 
      if(choice.charAt(0)=='a') 
      { 
       System.out.println("The following bikes are available:\n"); 
       for(int b = 0; b <= numBikes - 1; b++) 
        if(available [b]== true)     
         System.out.println(" Bike No:" + (b+1)); 
       System.out.println("Enter your bike number you want choose"); 
       int bikeNo = scan.nextInt(); 
       scan.nextLine(); 
       if(availableBike>0) 
       { 
        if(available[bikeNo-1]==true) 
        {     
         available[bikeNo-1]=false; 
         System.out.println("Enter time of renting"); 
         timeRented[bikeNo-1]=scan.nextLine(); 
         --availableBike; 
        } 
        else 
         System.out.println("Sorry bike's not available choose another"); 
       } 
       else 
        System.out.println("Sorry all bikes are not available at this time"); 
      } 
      else if(choice.charAt(0)=='b') 
      { 
       System.out.println("The following bikes are not available:\n"); 
       for(int b = 0; b <= numBikes - 1; b++) 
        if(available [b]== false)    
         System.out.println(" Bike No:" + (b+1)); 

       System.out.println("Enter bike number you want to return"); 
       int bikeNo=scan.nextInt(); 
       scan.nextLine(); 
       if(available[bikeNo-1]==false) 
       { 
        available[bikeNo-1]=true; 
        System.out.println("Enter out time"); 
        returningTime[bikeNo-1]=scan.nextLine(); 
        System.out.println("Enter cost total"); 
        calculateCost[bikeNo-1]=scan.nextInt(); 
        scan.nextLine(); 
        System.out.println("Total is:"+calculateCost[bikeNo-1]); 
        calculateCost[bikeNo-1]=0; 
        ++availableBike; 
       } 
       else 
        System.out.println("Sorry error"); 
      } 
     } 
     while(!(choice.equals("zzz"))); 

    } 

}