[20250816] BOJ / G5 / 별 찍기 - 10 / 김수연 #673
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🧷 문제 링크
https://www.acmicpc.net/problem/2447
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
크기 N의 패턴은 N×N 정사각형 모양이고,
N이 3보다 클 경우, 크기 N의 패턴은 공백으로 채워진 가운데의 (N/3)×(N/3) 정사각형을 크기 N/3의 패턴으로 둘러싼 형태일 때,
N번째 줄까지의 별 출력하기
🔍 풀이 방법
재귀 사용
if((i/n) % 3 == 1 && (j/n) % 3 == 1) 조건을 만족하는 부분은 공백으로 놔두고, 3으로 더이상 나눠지지 않는 1이 되면 * 출력하기
⏳ 회고
StringBuilder가 아닌 println으로 출력을 했을 때 시간초과가 났다..
그냥 StringBuilder 쓰는게 마음 편할듯..