JAVA HOW TO PROGRAM, NINTH EDITION, DEITEL: CHAPTER SIX SOLUTIONS

Question: Guess The Number

Write an application that plays “guess the number” as follows: Your program chooses the number to be guessed by selecting a random integer in the range 1 to 1000. The application displays the prompt Guess a number between 1 and 1000. The player inputs a first guess. If the player's guess is incorrect, your program should display Too high. Try again. or Too low. Try again. to help the player “zero in” on the correct answer. The program should prompt the user for the next guess. When the user enters the correct answer, display Congratulations. You guessed the number!, and allow the user to choose whether to play again. [Note: The guessing technique employed in this problem is similar to a binary search, which is discussed in Chapter 19, Searching, Sorting and Big O.]

Solution: Guess The Number

//Author: Free Coder
//www.freecoder247.blogspot.com

import java.util.Scanner;
import java.util.Random;

public class GuesstheNumber {
 
public static void main (String[] args) {
   
Random rand = new Random ();
int numberToGuess = rand.nextInt (1000);
int numberOfTries = 0;
Scanner input = new Scanner (System.in);
int guess;
boolean win = false;
   
while (win == false) {
      

System.out.println ("Guess a number between 1 and 1000: ");
guess = input.nextInt();
numberOfTries++;
     
if (guess == numberToGuess) {
win=true;
}
else if (guess < numberToGuess) {
System.out.println("Your guess is too low");
}
else if (guess > numberToGuess) {
System.out.println("Your guess is too high");
}
}
   
System.out.println("You win!");
System.out.println("The number was " + numberToGuess);
System.out.println("It took you " + numberOfTries + " tries ");
   
}
}