프로그래머스 Java : 비밀 지도

https://school.programmers.co.kr/learn/courses/30/lessons/17681

프로그래머스

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- Java

class Solution {
    public String[] solution(int n, int[] arr1, int[] arr2) {
        String[] answer = new String[n];
		StringBuilder sb;
		for(int i=0;i<n;i++) {
			sb = new StringBuilder();
			int a = arr1[i],b=arr2[i];
			for(int j=0;j<n;j++) {
				if(a%2==0&&b%2==0)
					sb.append(" ");
				else
					sb.append("#");
                a/=2;b/=2;
			}
			answer[i]=sb.reverse().toString();
		}
        return answer;
    }
}