[ Hotfix/#272 ] 시간 배열의 0번째는 시간표에 우선순위 적용안되는 이슈 해결 #273
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🌀 해당 이슈 번호
🔹 어떤 것을 변경했나요?
🔹 어떻게 구현했나요?
위로직은 id가 0일 때, 즉 첫번째 원소일때도 falsy한값이므로 무조건 0으로 반환하기에 null임을 체크해주었습니다.
🔹 PR 포인트를 알려주세요!
구현방식에 언급하였습니다!
🔹 스크린샷을 남겨주세요!
2024-07-18.5.30.39.mov