Question

package penny_pinch_v2;

public class Board {

  public static String[] board = new String[25];

  public static void fillBoard() {
    for (int i = 0; i < 25; i++) {
      board[i] = "[    ]";
    }
  }
  public static void printBoard() {
    for (int i = 0; i < 25; i++) {
      if (i == 5 || i == 10 || i == 15 || i == 20)
        System.out.println();
      System.out.format("%12s", board[i]);
    }
  }
}

package penny_pinch_v2;

import java.util.Random;

public class Pennies {

  private static Random random;

  public static void throwPennies() {
    int count, randInt;
    random = new Random();
    for (int i = 0; i < 10; i++) {
      randInt = random.nextInt(25);
      count = 0;
      while (count == 0) {
        if (Board.board[randInt].charAt(1) != '[') {
          Board.board[randInt] = "[" + Board.board[randInt] + "]";
          count++;
        }
      }
    }
  }
}

package penny_pinch_v2;

import java.util.Random;

public class Prizes {

  private static Random random;
  public static String[] prizes = {
    "Puzzle", "Poster", "Ball", "Game", "Doll"
  };
  public static int[] prizeCount = new int[5];

  public static void fillPrizes() {
    int count, randInt;
    random = new Random();
    for (int i = 0; i < 3; i++) {
      for (int j = 0; j < 5; j++) {
        count = 0;
        while (count == 0) {
          randInt = random.nextInt(25);
          if (Board.board[randInt] == "[    ]") {
            Board.board[randInt] = "[" + prizes[j] + "]";
            count++;
          }
        }
      }
    }
  }
  public static void checkPrizes() {
    for (int i = 0; i < 25; i++) {
      if (Board.board[i].equals("[[Puzzle]]"))
        prizeCount[0] ++;
      else if (Board.board[i].equals("[[Poster]]"))
        prizeCount[1] ++;
      else if (Board.board[i].equals("[[Bass]]"))
        prizeCount[2] ++;
      else if (Board.board[i].equals("[[Game]]"))
        prizeCount[3] ++;
      else if (Board.board[i].equals("[[Doll]]"))
        prizeCount[4] ++;
    }
  }

}

package penny_pinch_v2;

public class RunPennyPinch {
  public static void main(String[] args) {

    Board.fillBoard();
    Prizes.fillPrizes();
    Pennies.throwPennies();
    Board.printBoard();
    Prizes.checkPrizes();

    for (int j = 0; j < 5; j++) {
      if (Prizes.prizeCount[j] == 3) {
        System.out.println("You won a " + Prizes.prizes[j] + "!");
      }
    }
  }
}

嘿那里，我有我认为的工作代码，但我最近遇到了让控制台显示任何内容的问题。在我添加checkPrizes（）方法之前，一切都很好。第二天我尝试运行它，Eclipse会停止响应几秒钟，控制台中不会出现任何内容。如果有人能够澄清什么是错的，（任何逻辑错误，无限循环或Eclipse本身），那将是非常棒的。干杯!

Answer 1

在这里，您可能想重新考虑在count方法中增加throwPennies的位置，或者可能是打破此while循环的条件。我将其修改如下。

while (count == 0) {
      System.out.println("inside throw pennies while");
    if (Board.board[randInt].charAt(1) != '[') {
                  System.out.println("inside throw pennies if");
      Board.board[randInt] = "[" + Board.board[randInt] + "]";

    }
    count++;
  }

如果这有帮助，请告诉我。

Answer 2

您可以尝试删除checkPrizes（）并再次运行它。可能会给出一些更好的理解。或者您可以尝试通过CLI执行。这可以清除问题是否与日食有关。

为什么我的代码不产生任何输出？

2 个答案: