[jongwanra] WEEK 04 Solutions #1819
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printjin-gmailcom
approved these changes
Aug 16, 2025
| if node.right: | ||
| dfs(depth + 1, node.right) | ||
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| if not root: |
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이 부분은 문제 없지만, root가 없는 경우는 이미 위에서 처리했기 때문에 if not node: 로 처리해도 더 범용적
| current_node = dummy_head | ||
| while list1 and list2: | ||
| if list1.val > list2.val: | ||
| current_node.next = ListNode(list2.val) |
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기존 노드를 재사용하지 않고 새 노드를 계속 생성 → 메모리 낭비
| return dummy_head.next | ||
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| def print_list(node:Optional[ListNode])->None: | ||
| list = [] |
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list라는 변수명이 Python 내장 타입과 충돌
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