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Friday, 19 August 2016

Chapter 5 Exercise 32, Introduction to Java Programming, Tenth Edition Y. Daniel LiangY.

**5.32 (Game: lottery) Revise Listing 3.8, Lottery.java, to generate a lottery of a two digit number. The two digits in the number are distinct. (Hint: Generate the first digit. Use a loop to continuously generate the second digit until it is different from the first digit.)

import java.util.Scanner;
 
 
public class ProgrammingEX5_32 {
 
 public static void main(String[] args) {
 
  // Prompt the user to enter a guess
  Scanner input = new Scanner(System.in);
  System.out.print("Enter your lottery pick (two digits): ");
  int guess = input.nextInt();
  int lotteryDigit1;
  int lotteryDigit2;
  int lottery;
  do {
   // Generate a lottery
   lottery = (int) (Math.random() * 100);
   // Get digits from lottery
   lotteryDigit1 = lottery / 10;
   lotteryDigit2 = lottery % 10;
  } while (lotteryDigit1 == lotteryDigit2);
 
  // Get digits from guess
  int guessDigit1 = guess / 10;
  int guessDigit2 = guess % 10;
 
  System.out.println("The lottery number is " + lottery);
 
  // Check the guess
  if (guess == lottery)
   System.out.println("Exact match: you win $10,000");
  else if (guessDigit2 == lotteryDigit1 && guessDigit1 == lotteryDigit2)
   System.out.println("Match all digits: you win $3,000");
  else if (guessDigit1 == lotteryDigit1 || guessDigit1 == lotteryDigit2
    || guessDigit2 == lotteryDigit1 || guessDigit2 == lotteryDigit2)
   System.out.println("Match one digit: you win $1,000");
  else
   System.out.println("Sorry, no match");
 }
}

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