按书上的样例来操作的。

不过，书上提到的BUG，我没有在看下一章时就解决了哈。。

从网上查找的删除数组元素的方法。

其实，将数据结构更改为ARRAYLIST，可能更简单。：）

GameHelper.java

import java.io.*;public class GameHelper {    public String GetUserInput(String prompt) {        String inputLine = null;        System.out.println(prompt + " ");        try {            BufferedReader is = new BufferedReader(new InputStreamReader(System.in));            inputLine = is.readLine();            if (inputLine.length() == 0 )                return null;        } catch (IOException e) {            System.out.println("IOException: " + e);        }        return inputLine;    }}

SimpleDotCom.java

public class SimpleDotCom {    int[] locationCells;    int numOfHits = 0;        public void setLocationCells(int[] locs) {        locationCells = locs;    }        public int[] delLocationCells(int eleInt) {        for(int i = 0; i < locationCells.length; i++) {            if (eleInt == locationCells[i]) {                for(int j = i + 1; j < locationCells.length; j ++) {                    locationCells[i] = locationCells[j];                }            }        }        return locationCells;    }        public String checkYourself(String stringGuess) {        int guess = Integer.parseInt(stringGuess);        String result  = "miss";        for (int cell : locationCells) {            if (guess == cell) {                result = "hit";                numOfHits++;                delLocationCells(guess);                break;            }        }                if (numOfHits == locationCells.length) {            result = "kill";        }        System.out.println(result);        return result;    }}

SimpleDotComTestDrive.java

 

public class SimpleDotComTestDrive {    public static void main(String[] args) {        int numOfGuesses = 0;        GameHelper helper = new GameHelper();                SimpleDotCom theDotCom = new SimpleDotCom();        int randomNum = (int) (Math.random() * 5);                int[] locations = {randomNum, randomNum + 1, randomNum + 2};        theDotCom.setLocationCells(locations);        boolean isAlive = true;                while(isAlive == true) {            String guess = helper.GetUserInput("Enter a number");            String result = theDotCom.checkYourself(guess);            numOfGuesses++;            if(result.equals("kill")) {                isAlive = false;                System.out.println("You took " + numOfGuesses + " guesses.");            }                    }            }}

输出：