[Java] Lotto, 숫자 중복 없이 5000원어치

 

public class Lotto {

	public static void main(String[] args) {

		boolean swit[] = new boolean[45];
		int lotto[] = new int[30];
		
		int w, r;
		
		w = 0;
		while(w < 30) {
			r = (int)(Math.random()*45);
			if(swit[r] == false) {
				swit[r] = true;
				lotto[w] = r + 1;
				w++;
			}
		}
		
		for(int i=0; i<lotto.length; i++) {
			System.out.print(lotto[i]+" ");
			if((i+1) % 6 == 0)
				System.out.println();
		}
	}
}