[英]Logic going awry in a program that runs hangman (Java)
所以這里還有另一個劊子手問題要添加到庫中。 我的實體和邊界類都是完整的,除了一個名為revealLetter()的方法,它用正確猜到的字母替換空格。 它還計算正確猜測的字母數(如果有的話),並將該整數返回給驅動程序,以確定它是否發生了未命中或命中。 如果用戶輸入了錯誤的字母,revealLetter()將返回零,否則它將返回正確的字母數以確定正確的字母。 我的問題是,盡管填寫了正確的字母,revealLetter()總是返回零。 我已經拋出一些sout來分隔發生的事情,並且在退出for for循環后計數器顯示為零。 我還在學習Java,所以很有可能它很簡單,但目前我看起來很復雜。 這是驅動程序:
package hangman;
import java.util.Scanner;
public class Hangman {
public static int NUMBER_MISSES = 5;
public static void main(String[] args) {
String guessedLetter;
WordHider hider = new WordHider();
Dictionary dictionary = new Dictionary();
Scanner Keyboard = new Scanner(System.in);
hider.setHiddenWord(dictionary.getRandomWord());
System.out.println(hider.getHiddenWord().length());
System.out.println(hider.getHiddenWord());
do {
hider.wordFound();
System.out.printf(hider.getPartiallyFoundWord() + " Chances Remaing: %d \nMake a guess: ", NUMBER_MISSES);
guessedLetter = Keyboard.nextLine();
hider.revealLetter(guessedLetter.toLowerCase());
if (hider.revealLetter(guessedLetter)== 0) {
NUMBER_MISSES--;
if (NUMBER_MISSES == 4) {
System.out.println("Swing and a miss!");
}
else if (NUMBER_MISSES == 3) {
System.out.println("Yup. That. Is. A. Miss.");
}
else if (NUMBER_MISSES == 2) {
System.out.println("MISS! They say third time is a charm.");
}
else if (NUMBER_MISSES == 1) {
System.out.println("Ouch. One guess left, think carefully.");
}
} else {
System.out.println("That's a hit!");
}
if (hider.wordFound() == true) {
NUMBER_MISSES = 0;
}
} while (NUMBER_MISSES > 0);
if ((NUMBER_MISSES == 0) && (hider.wordFound() == false)) {
System.out.println("Critical Failure. The word was " + hider.getHiddenWord() + " try harder next time and you'll win.");
} else if ((NUMBER_MISSES == 0) && (hider.wordFound() == true)) {
System.out.println(hider.getHiddenWord() + "\nBingo! You win!");
}
}
}
這是將.txt中的單詞存儲到數組並生成隨機單詞的類:
package hangman;
import java.util.Random;
import java.io.File;
import java.io.FileNotFoundException;
import java.util.Scanner;
public class Dictionary {
//Random randomizer = new Random();
private static String randomWord;
String[] dictionary = new String[81452];
private static String FILE_NAME = "dictionarycleaned.txt";
Dictionary() {
int words = 0;
Scanner infile = null;
try {
infile = new Scanner(new File(FILE_NAME));
while (infile.hasNext()) {
dictionary[words] = infile.nextLine();
words++;
}
//System.out.println(dictionary[81451]);
} catch (FileNotFoundException e) {
System.err.println("Error opening the file " + FILE_NAME);
System.exit(1);
}
}
public String getRandomWord(){
//randomWord = (dictionary[randomizer.nextInt(dictionary.length)]); //Are either of these techniques better than the other?
randomWord = (dictionary[new Random().nextInt(dictionary.length)]);
return randomWord;
}
}
這是包含revealLetter()的類,它還處理隨機字:
package hangman;
public class WordHider {
private static String hiddenWord;
private static String partiallyFoundWord;
WordHider() {
hiddenWord = "";
partiallyFoundWord = "";
}
public String getHiddenWord() {
return hiddenWord;
}
public String getPartiallyFoundWord() {
return partiallyFoundWord;
}
public void setHiddenWord(String newHiddenWord) {
int charCount;
hiddenWord = newHiddenWord;
for (charCount = 0; charCount < hiddenWord.length(); charCount++) {
partiallyFoundWord += "*";
}
}
public int revealLetter(String letter) {
int correctChars = 0;
if (letter.length() < 1 || letter.length() > 1) {
correctChars = 0;
return correctChars;
} else {
String tempString = "";
for (int i = 0; i < hiddenWord.length(); i++) {
if ((letter.charAt(0) == hiddenWord.charAt(i)) && (partiallyFoundWord.charAt(i) == '*')) {
correctChars++;
tempString += Character.toString(hiddenWord.charAt(i));
} else {
tempString += partiallyFoundWord.charAt(i);
}
}
partiallyFoundWord = tempString;
}
return correctChars;
}
public boolean wordFound() {
boolean won = false;
if (partiallyFoundWord.contains(hiddenWord)) {
won = true;
}
return won;
}
public void hideWord() {
for (int i = 0; i < hiddenWord.length(); i++) {
partiallyFoundWord += "*";
}
}
}
值得注意的是,我正在參加CS大學課程,並且有一個嚴格的法律來復制不屬於我的代碼。 因此,如果發生任何形式的靈魂,你能解釋我在大多數英語中做錯了什么。 我仍然想把代碼弄清楚,我只是邏輯上卡住了。 提前致謝
在您的驅動程序main()
您有:
hider.revealLetter(guessedLetter.toLowerCase());
if (hider.revealLetter(guessedLetter)== 0)
這就是為什么你得到一個成功的電話然后第二次沒有任何關系。 我可以突出一些風格問題,但一個重要的問題是:
if (letter.length() < 1 || letter.length() > 1) {
correctChars = 0;
return correctChars;
} else {
為什么不只是letter.length() != 1
,並且因為correctChars
已經初始化為零,所以不需要再次執行,因此可以刪除整個“then”部分, if
變為letter.length() == 1
。
也:
tempString += Character.toString(hiddenWord.charAt(i));
和:
tempString += partiallyFoundWord.charAt(i);
兩者都做同樣的事情,所以選擇一種風格或另一種風格。
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