[SW Expert Academy] - (D1)2019. 더블더블(Stream)

https://swexpertacademy.com/main/code/problem/problemDetail.do?contestProbId=AV5QDEX6AqwDFAUq&categoryId=AV5QDEX6AqwDFAUq&categoryType=CODE

SW Expert Academy

코드

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

public class Solution {

	public static void main(String[] args) {
		Scanner scan = new Scanner(System.in);
		
		int n = scan.nextInt();
		int[] arr = new int[n+1];
		arr[0] = 1;
		
		for(int i=1; i<n+1; i++) {
			arr[i] = arr[i-1] * 2;
		}
		
		Arrays.stream(arr).forEach(i -> System.out.print(i + " "));
		scan.close();
	}

}

풀이

주어진 n+1까지 2씩 곱해서 배열에 저장하고, forEach 를 통해 출력한다.(순회)