Java Exercise Nr. 30 (Selections)

Write a program that randomly generates a lottery of a two-digit number, prompts the user to enter a two-digit number, and determines whether the user wins according to the following rules:
1. If the user input matches the lottery number in the exact order, the award is $10,000.
2. If all digits in the user input match all digits in the lottery number, the award is $3,000.
3. If one digit in the user input matches a digit in the lottery number, the award is $1,000.

Solution:

public static void main(String[] args) {
  int lottery = (int)(Math.random() * 100);

  Scanner input = new Scanner(System.in);
  System.out.print("Enter your lottery pick (two digits): ");
  int guess = input.nextInt();

  int lotteryDigit1 = lottery / 10;
  int lotteryDigit2 = lottery % 10;

  int guessDigit1 = guess / 10;
  int guessDigit2 = guess % 10;

  System.out.println("The lottery number is " + lottery);

  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");
  }
}