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

class Lotto642 {
    public static void main (String[]args){
        Scanner sc = new Scanner(System.in);
        System.out.println(" 6/42 LOTTO");
        System.out.println("Enter 6 numbers between 1 and 42 (no duplicates):");
        int[] winningNumbers = getRandomLotteryNumbers();
        int[] userNumbers = getUserInput();
        int matches = countMatches(userNumbers, winningNumbers);

        // --- Show Results ---
        System.out.println("\nYour numbers: " + Arrays.toString(userNumbers));
        System.out.println("Winning numbers: " + Arrays.toString(winningNumbers));
        System.out.println("You matched " + matches + " number(s).");
        // --- Switch Case for Prize ---
        switch (matches) {
            case 6 -> System.out.println("JACKPOT!");
            case 3, 4, 5 -> System.out.println("MINOR prize!");
            default -> System.out.println("Sorry, no prize. Better luck next time!");
        }
    }

    private static int countMatches(int[] userNumbers, int[] winningNumbers) {
        int matches = 0;
        for (int u : userNumbers) {
            for (int w : winningNumbers) {
                if (u == w) {
                    matches++;
                }
            }
        }
        return matches;
    }

    private static int[] getRandomLotteryNumbers() {
        int[] nums = new int[6];
        Random rand = new Random();
        int count = 0;
        while (count < 6) {
            int num = rand.nextInt(42) + 1; // 1-42
            boolean duplicate = false;
            for (int j = 0; j < count; j++) {
                if (nums[j] == num) {
                    duplicate = true;
                    break;
                }
            }
            if (!duplicate) {
                nums[count] = num;
                count++;
            }
        }
        return nums;
    }

    private static int[] getUserInput() {
        Scanner sc = new Scanner(System.in);
        int[] nums = new int[6];
        int i = 0;
        while (i < 6) {
            System.out.print("Enter number " + (i + 1) + ": ");
            int num = sc.nextInt();
            if (num < 1 || num > 42) {
                System.out.println("Invalid! Number must be between 1 and 42.");
                continue; // re-ask
            }
            boolean duplicate = false;
            for (int j = 0; j < i; j++) {
                if (nums[j] == num) {
                    duplicate = true;
                    break;
                }
            }
            if (duplicate) {
                System.out.println("Duplicate number! Try again.");
                continue;
            }
            nums[i] = num;
            i++;
        }
        return nums;
    }
}