[20251105] PGM / LV2 / 프로세스 / 강신지 #1325
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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/42587
🧭 풀이 시간
25분
👀 체감 난이도
✏️ 문제 설명
큐에 대기 중인 프로세스를 우선순위 순으로 실행할 때, 특정 프로세스가 몇 번째에 실행되는지 구하는 문제.
🔍 풀이 방법
우선순위가 남아있는 개수를 세어 둔 배열을 사용해, 현재 실행해야 할 최대 우선순위를 빠르게 찾는다. 큐에서 하나씩 꺼내며 최고 우선순위면 실행, 아니면 다시 큐에 넣는 방식으로 시뮬레이션
⏳ 회고
우선순위 탐색을 매번 선형으로 하면 비효율적이므로 카운팅을 활용하는 게 깔끔