[20251021] PGM / Lv2 / n^2 배열 자르기 / 이강현#1188
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ShinHeeEul merged 1 commit intomainfrom Oct 21, 2025
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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/87390#
🧭 풀이 시간
30분
👀 체감 난이도
✏️ 문제 설명
n*n 배열에서 1행 1열부터 i행 i열까지 영역을 확장하며 i를 저장한다.
그리고 1차원으로 풀어냄.
이때 left에서 right까지의 배열을 반환하자.
ex) n이 3인경우에는 아래와 같음.
1 2 3
2 2 3
3 3 3 -> 1 2 3 2 2 3 3 3 3
🔍 풀이 방법
그냥 생각좀만 하면 몫과 나머지로 쉽게 규칙찾아서 구할 수 있음.
⏳ 회고
ez