需要帮助模拟小偷偷电视的程序

Question

现在拿起一本Java教科书。实际上再次尝试学习语言。

本书中有一段非常有趣的代码，它涉及一个名为 House 的类，它模拟小偷从人们的房子（也是类）偷电视。

唯一的问题是我似乎不知道如何修改我的数组来改变小偷收集的房屋数量。很难解释，但这是我现在的代码。我现在完全迷失了。我真的不明白数组是如何工作的，这让我很烦恼。任何帮助将不胜感激。

import java.util.Scanner;
class House {
  public int nHDTVs;
  public House pFriend;
  public House(int nParameter, House friendParameter)
  {
    nHDTVs = nParameter;
    pFriend = friendParameter;
  }
  public void steal(House thiefsHouse, House firstVictim)
  {
    int nTVsStolen = 0;
    int victimNumber = 0;
    for(int i =0; i<victimNumber; i++)
    {
     nTVsStolen = nTVsStolen + array[i];
    }
    //nTVsStolen = nTVsStolen + 
    /*for(i=1;i>10;i++)
    {
      //stuff
    }*/
    //thiefsHouse nHDTVs = n


    System.out.println("Victim " + (victimNumber+1) + " " + "lives at " + firstVictim);
    System.out.println("Victim " + (victimNumber+2) + " " + "lives at " + firstVictim.pFriend);
 System.out.println("I've just stolen " + 0 + " TVs from the House at " + null);

    thiefsHouse.nHDTVs = thiefsHouse.nHDTVs + nTVsStolen;
  }
  public static void main(String dfgasdfwe[]) {
    int nHouses;
    Scanner keyboard = new Scanner(System.in);
    System.out.println("How many houses should the thief steal from?");
    nHouses = keyboard.nextInt();
    House array[] = new House[nHouses];
    array[nHouses - 1] = new House(3, null);
    for(int i = nHouses - 2; i>=0; i--)
    {
      array[i] = new House( i , array[i+1]);
    }
    House thiefsHouse = array[0];
    //pFriend nHDTVs[victimNumber] = 0;
    thiefsHouse.steal(thiefsHouse, thiefsHouse.pFriend);
    System.out.println("I now have " + thiefsHouse.nHDTVs + " TV sets. HA HA.");

  }
}

Answer 1

你的问题从根本上来说是这里

int nTVsStolen = 0;
int victimNumber = 0;
for(int i =0; i<victimNumber; i++)
{
 nTVsStolen = nTVsStolen + array[i];
}

第一个问题是代码无法编译，因为 array 是在 main 中定义的并且在此范围内不可见。下一个数组是 House 类型，因此不能与 + 运算符一起使用。

victimNumber 始终为零，因此循环永远不会执行。

也许将其替换为

while(nHDTVs > 0)
{
 nHDTVs--;
 nTVsStolen++;
 System.out.println("I stole a TV from this Victim: " + toString());
}