package BookExample;

/**This generates a random number between 1 and 10 and then has the user guess the random number.

* All code was self-generated following the suggestion of a project outlined in

* Java Programs to Accompany Programming Logic and Design, second edition by Joyce Farrell.

*/

import java.util.Random;

import java.util.ArrayList;

import javax.swing.JOptionPane;

public class GuessNumberList {

public static void main(String[] args) {

int randomInt;

String userInputString;

int userInput = 0;

Random randomNumber = new Random();

int guessCount = 0;

boolean stringException;

ArrayList userList = new ArrayList();

int arrayIndex;

long timeStart, timeEnd;

double timePlayed;

//Generate random number

randomInt = randomNumber.nextInt(9) + 1;

//Set start time of guessing

timeStart = System.currentTimeMillis();

//Comparison loop

while(userInput < 1 || userInput > 10 || userInput != randomInt)

{

stringException = false;

//User input guess

userInputString = JOptionPane.showInputDialog("Enter guess (1-10):");

//Verify user input

try

{

//Convert user input string to integer

userInput = Integer.parseInt(userInputString);

}

catch(NumberFormatException e1)

{

//Catch a non-integer user input

System.out.println("Please enter a number between 1 and 10");

userInput = 0;

stringException = true;

}

if((userInput < 1 || userInput > 10) && stringException == false)

{

System.out.println("Please enter a number between 1 and 10");

userInput = 0;

}

else if(userInput != randomInt && stringException == false)

{

//Check for user input in user array list

arrayIndex = userList.indexOf(userInput);

if(arrayIndex != -1)

{

System.out.println("You've already guessed " + userInput + "! Guess Again!");

}

else

{

userList.add(userInput);

System.out.println("Sorry! Guess again");

}

}

guessCount++;

}

//Calcuate end time of guessing

timeEnd = System.currentTimeMillis();

//Calculate the total time of guessing

timePlayed = (timeEnd - timeStart)/1000;

//Output results

System.out.println("Congratulations! You guessed the random number " + randomInt + " in " + guessCount + " guesses!");

System.out.println("You took " + timePlayed + " seconds to guess the number.");

System.exit(0);

}

}