[20250829] PGM / LV3 / 여행경로 / 김수연 #769
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🧷 문제 링크
https://school.programmers.co.kr/learn/courses/30/lessons/43164
🧭 풀이 시간
20분
👀 체감 난이도
✏️ 문제 설명
여행경로를 짜려고 할 때, a공항에서 b 공항으로 가는 항공권들이 주어짐
방문하는 공항 순서대로 경로 구하기
🔍 풀이 방법
dfs이용
가능한 경로가 2개 이상이면 알파벳 순서가 앞서는 경로를 return 해야했는데, 그래서 경로를 String으로 저장해두고, 나중에 ,로 split해서 정답 return 했음
⏳ 회고
dfs는 헷갈린다