206. Reverse Linked List#19
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huyfififi
approved these changes
Aug 10, 2025
| rest = head | ||
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| while rest: | ||
| rest_tail = rest.next |
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restとrest_tailが、どちらも「ひっくり返す残りのNodeの末尾」を保持しているように聞こえるのですが、違うNodeを指すことにわかりづらさを覚えました。
line 142時点ではまだひっくり返していないので、next_rest_tail、line 139をrest_tailとした方がわかりやすいのかな？と思います。
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私もこの二つが少しわかりづらいと思いました。
自分はrestをcurrent, rest_tailをsuccessorという名前にしていました。
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参考まで、私は
previous = None
node = headで初期化していました。これだと最終的に previous を返すことになるので好みはあると思いますが、個人的には隣接する node たちを処理しているのがわかってよいかなという感じがしています。
nodchip
reviewed
Aug 11, 2025
| node = head | ||
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| while node: | ||
| node_next = node.next |
h1rosaka
reviewed
Aug 12, 2025
| visited_nodes.append(node.val) | ||
| node = node.next | ||
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| reversed_head = ListNode(visited_nodes.pop(), None) |
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dummy_headを作って、visited_nodesからpopする処理は全てwhileループの中でやると、似た処理が1箇所にまとまるので、個人的には好きです。
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読みやすかったです。 |
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206. Reverse Linked List
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