Create taurus09318976.py #1668
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Create taurus09318976.py #1668
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printjin-gmailcom
approved these changes
Jul 15, 2025
| root_val = preorder[0] | ||
| root = TreeNode(root_val) | ||
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| # 3. inorder에서 루트 위치 찾기 |
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O(n)이므로 전체 시간복잡도 증가 → 인덱스 맵(dict) 사전 생성 추천
| left_inorder = inorder[:root_index] | ||
| right_inorder = inorder[root_index + 1:] | ||
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| # 5. preorder도 해당 크기만큼 분할 |
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매번 리스트 복사 발생 → 인덱스 범위로 재귀 호출하면 성능 개선 가능
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