정동섭

Lottery.java

// 정동섭
import java.util.*;

public class Lottery {
    final static int MAX_SIZE= 6;
    int[] lottery_numbers;


    Lottery(){
        HashSet hashSet= new HashSet();
        for (int i=0; i<MAX_SIZE; i++){
            int num= adding_number();
            if (num == 0)
                num= adding_number();
            hashSet.add(num);
        }

        int[] lottery_numbers= new int[MAX_SIZE];
        int idx= 0;
        for (var e: hashSet){
            lottery_numbers[idx++]= (int) e;
        }

        Arrays.sort(lottery_numbers);

        this.lottery_numbers= lottery_numbers;
    }

    private int adding_number() {
        Random random= new Random();
        int number;
        while (true){
            number= random.nextInt(44)+1;
            if (number != 00)
                return number;
        }
    }

    public static void main(String[] args) {
        System.out.println("[로또 당첨 프로그램]");

        System.out.printf("로또 개수를 입력해 주세요.(숫자 1 ~10):");
        Scanner sc= new Scanner(System.in);
        int number= sc.nextInt();

        ArrayList<Lottery> lotteries= new ArrayList<>();
        char char_next= 'A';
        for (int i=0; i<number; i++){
            Lottery lottery= new Lottery();

            System.out.printf(String.format("%c  ", char_next++));
            for (var e: lottery.lottery_numbers)
                System.out.printf(String.format("%02d ", e));
            System.out.println();

            lotteries.add(lottery);
        }
        System.out.println();

        Lottery provider= new Lottery();
        System.out.println("[로또 발표]");
        for (var e: provider.lottery_numbers)
            System.out.printf(e+" ");
        System.out.println("\n");

        int count= 0;
        char char_next2= 'A';
        for (int i=0; i<number; i++){
            var element= lotteries.get(i);
            System.out.printf(String.format("%c  ", char_next2++));
            int j =0;
            for (var e: element.lottery_numbers){
                System.out.printf(String.format("%02d ", e));
                if (e == provider.lottery_numbers[j]){
                    count++;
                    j++;
                }
            }
            System.out.printf(String.format(" ==> %d개 일치", count));
            count=0;
            System.out.println();
        }
    }
}