Merged
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
🧷 문제 링크
https://www.acmicpc.net/problem/1300
🧭 풀이 시간
80분
👀 체감 난이도
✏️ 문제 설명
NN 짜리 배열 A 에서 A[i][j] = ij 일 때
이 배열을 일차원으로 만들고 오름차순 정렬했을 때
K번째 숫자를 찾는 문제입니다.
🔍 풀이 방법
이분탐색을 이용해서 풀었습니다.
K번째 수를 찾아야하기 때문에 중간값(mid)보다 작은 값이 K개와 비교하여 작은지, 큰지에 따라서 갱신했습니다.
⏳ 회고
호기롭게 도전했다가 고전했던 문제입니다.
N이 10만으로 크기 때문에 실제 배열을 정의하지 못하는 문제였습니다.