Initial commit in new repo

05 Bagels/java/Bagels.java

@@ -0,0 +1,129 @@
+/******************************************************************************
+*
+* Bagels
+*
+* From: BASIC Computer Games (1978)
+*       Edited by David H. Ahl
+*
+* "In this game, the computer picks a 3-digit secret number using
+*  the digits 0 to 9 and you attempt to guess what it is.  You are
+*  allowed up to twenty guesses.  No digit is repeated.  After
+*  each guess the computer will give you clues about your guess
+*  as follows:
+*
+*  PICO     One digit is correct, but in the wrong place
+*  FERMI    One digit is in the correct place
+*  BAGELS   No digit is correct
+*
+* "You will learn to draw inferences from the clues and, with
+*  practice, you'll learn to improve your score.  There are several
+*  good strategies for playing Bagels.  After you have found a good
+*  strategy, see if you can improve it.  Or try a different strategy
+*  altogether and see if it is any better.  While the program allows
+*  up to twenty guesses, if you use a good strategy it should not
+*  take more than eight guesses to get any number.
+*
+* "The original authors of this program are D. Resek and P. Rowe of
+*  the Lawrence Hall of Science, Berkeley, California."
+*
+* Java port by Jeff Jetton, 2020, based on an earlier Python port
+*
+******************************************************************************/
+
+import java.util.Scanner;
+
+public class Bagels {
+
+  public static void main(String[] args) {
+    
+    int gamesWon = 0;
+
+    // Intro text
+    System.out.println("\n\n                Bagels");
+    System.out.println("Creative Computing  Morristown, New Jersey");
+    System.out.println("\n\n");
+    System.out.print("Would you like the rules (Yes or No)? ");
+    
+    // Need instructions?
+    Scanner scan = new Scanner(System.in);
+    String s = scan.nextLine();
+    if (s.length() == 0 || s.toUpperCase().charAt(0) != 'N') {
+      System.out.println();
+      BagelInstructions.printInstructions();
+    }
+    
+    // Loop for playing multiple games
+    boolean stillPlaying = true;
+    while(stillPlaying) {
+      
+      // Set up a new game
+      BagelGame game = new BagelGame();
+      System.out.println("\nO.K.  I have a number in mind.");
+    
+      // Loop guess and responsses until game is over
+      while (!game.isOver()) {
+        String guess = getValidGuess(game);
+        String response = game.makeGuess(guess);
+        // Don't print a response if the game is won
+        if (!game.isWon()) {
+          System.out.println(response);
+        }
+      }
+    
+      // Game is over. But did we win or lose?
+      if (game.isWon()) {
+        System.out.println("You got it!!!\n");
+        gamesWon++;
+      } else {
+        System.out.println("Oh well");
+        System.out.print("That's " + BagelGame.MAX_GUESSES + " guesses.  ");
+        System.out.println("My number was " + game.getSecretAsString());
+      }
+      
+      stillPlaying = getReplayResponse();
+    }
+    
+    // Print goodbye message
+    if (gamesWon > 0) {
+      System.out.println("\nA " + gamesWon + " point Bagels buff!!");
+    }
+    System.out.println("Hope you had fun.  Bye.\n");
+  }
+  
+  private static String getValidGuess(BagelGame game) {
+    // Keep asking for a guess until valid
+    Scanner scan = new Scanner(System.in);
+    boolean valid = false;
+    String guess = "";
+    String error;
+    
+    while (!valid) {
+      System.out.print("Guess # " + game.getGuessNum() + "     ? ");
+      guess = scan.nextLine().trim();
+      error = game.validateGuess(guess);
+      if (error == "") {
+        valid = true;
+      } else {
+        System.out.println(error);
+      }
+    }
+    return guess;
+  }
+  
+  private static boolean getReplayResponse() {
+    // keep asking for response until valid
+    Scanner scan = new Scanner(System.in);
+    // Keep looping until a non-zero-length string is entered
+    while (true) {
+      System.out.print("Play again (Yes or No)? ");
+      String response = scan.nextLine().trim();
+      if (response.length() > 0) {
+        return response.toUpperCase().charAt(0) == 'Y';
+      }
+    }
+  }
+  
+}
+
+
+