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[7주차] 이예진 #96
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[7주차] 이예진 #96
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BOJ/5001-10000번/YJ_5021.java
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getOrDefault는 null 값 일 때, 두번째 인자를 반환하는 건가요?! if null로 확인하지 않아도 돼서 좋은것 같네요!!!
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@KodaHye 맞아요! getOrDefault() 유용하게 많이 사용되더라구요
BOJ/5001-10000번/YJ_5021.java
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위상정렬은 indegree라는 진입차수 배열과 큐를 사용해야 되는데, 예진님은 위상정렬은 사용하지 않고 DFS로만 풀이했다고 해야될 것 같습니다!
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그래프의 구조 자체는 비순환 유향 그래프인 것이고, 문제 풀이 유형으로 DFS나 위상정렬 방식으로 풀이할 수 있는 것으로 이해하면 될 것 같습니다!
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