Java 中的 HiLo 猜谜游戏
原文： https://howtodoinjava.com/puzzles/hilo-guessing-game-in-java/
你们中的许多人在您的童年时代一定玩过 HiLo 游戏。 即使不完全相同，游戏也可能与此类似。 很好玩吧？ 那如果我们现在成年了怎么办？ 让我们以自己的方式再次玩这个游戏。 让我们为此构建一个 Java 程序，然后开始玩这个精彩的游戏 HiLo。
用 Java 编写 HiLo 游戏
在下面的程序中，我尝试用 Java 语言模拟 HiLo 游戏。 我为此版本的游戏设定了两个简单的规则：
- 最多猜 6 次密码。
- 密码是 1 到 100（含）之间的整数。
每次您猜到一个低于密码的数字（只有 JRE 知道）时，都会打印“LO”。 同样，如果您猜到一个比密码高的数字，则会打印“HI”。 您必须调整下一个猜测，以便能够在六次尝试中猜测正确的数字。
package hilo;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.Random;
public class HiLo {
private Random generator;
private int generatedNumber;
private int numberOfAttempts;
BufferedReader reader = null;
public HiLo() {
generator = new Random();
reader = new BufferedReader(new InputStreamReader(System.in));
}
public void start() throws IOException {
boolean wantToPlay = false;
boolean firstTime = true;
do {
System.out.println();
System.out.println();
System.out.println("Want to play the game of Hi and Lo??");
if (wantToPlay = prompt()) {
generatedNumber = generateSecretNumber();
numberOfAttempts = 0;
if (firstTime) {
describeRules();
firstTime = false;
}
playGame();
}
} while (wantToPlay);
System.out.println();
System.out.println("Thanks for playing the game. Hope you loved it !!");
reader.close();
}
private void describeRules() {
System.out.println();
System.out.println("Only 2 Rules:");
System.out.println("1) Guess the secret number in maximum 6 tries.");
System.out.println("2) The secret number is an integer between 1 and 100, inclusive :-)");
System.out.println();
System.out.println();
}
private int generateSecretNumber() {
return (generator.nextInt(100) + 1);
}
private void playGame() throws IOException {
while (numberOfAttempts < 6) {
int guess = getNextGuess();
if (guess > generatedNumber) {
System.out.println("HI");
} else if (guess < generatedNumber) {
System.out.println("LO");
} else {
System.out.println("Brave Soul, You guessed the right number!! Congratulations !!");
return;
}
numberOfAttempts++;
}
System.out.println("Sorry, you didn't guess the right number in six attempts. In other two words, YOU LOST !!!!");
System.out.println("The secret number was " + generatedNumber);
}
private boolean prompt() {
boolean answer = false;
try {
boolean inputOk = false;
while (!inputOk) {
System.out.print("Y / N : ");
String input = reader.readLine();
if (input.equalsIgnoreCase("y")) {
inputOk = true;
answer = true;
} else if (input.equalsIgnoreCase("n")) {
inputOk = true;
answer = false;
} else {
System.out.println("Ohh come on. Even Mr. Bean knows where are 'y' and 'n' in the keyboard?? Please try again:");
}
}
} catch (IOException e) {
e.printStackTrace();
System.exit(-1);
}
return answer;
}
private int getNextGuess() throws IOException {
boolean inputOk = false;
int number = 0;
String input = null;
while (!inputOk) {
try {
System.out.print("Please guess the secret number: ");
input = reader.readLine();
number = Integer.parseInt(input);
if (number >= 1 && number <= 100) {
inputOk = true;
} else {
System.out.println("Really? You didn't read the rules boy. Your number is not between 1 and 100 (" + number + ").");
}
} catch (NumberFormatException e) {
System.out.println("Invalid input (" + input + ")");
}
}
return number;
}
}
玩 HiLo 游戏
现在，游戏已准备就绪。 播放吧。
package hilo;
import java.io.IOException;
public class PlayGame
{
public static void main(String[] args)
{
HiLo hiLo = new HiLo();
try {
hiLo.start();
} catch (IOException e) {
e.printStackTrace();
}
}
}
Output:
Want to play the game of Hi and Lo??
Y / N : y
Only 2 Rules:
1) Guess the secret number in maximum 6 tries.
2) The secret number is an integer between 1 and 100, inclusive.
Please guess the secret number: 40
LO
Please guess the secret number: 60
LO
Please guess the secret number: 80
HI
Please guess the secret number: 70
LO
Please guess the secret number: 75
LO
Please guess the secret number: 77
HI
Sorry, you didn't guess the right number in six attempts. In other two words, YOU LOST !!!!
The secret number was 76
希望您喜欢这个游戏。
祝您学习愉快！