Create 0283-move-zeroes.md - #55
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shintaro1993
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Nov 6, 2025
| return nothing, modify nums in-place instead. | ||
| """ | ||
| def swap(index1, index2): | ||
| nums[index1], nums[index2] = nums[index2], nums[index1] |
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自分はしませんでしたが、このように swap 処理を関数に切り出す方が for 文の中の見通しがよさそうだと感じました。好みかもしれませんが。
shintaro1993
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Nov 6, 2025
| swap_target_index = 0 | ||
| for i in range(len(nums)): | ||
| if nums[i] != 0: | ||
| swap(i, swap_target_index) |
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ただの感想になりますが、swap_target_index <= i なので swap(swap_target_index, i) と書くのも自然なのかなと少し思いました。ただどちらが自然なのか、それとも意識しなくてもいいのか、わかりませんでした。
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ありがとうございます。
自分もそこで迷いました。iが主役で、swap_target_indexが脇役のように感じたのでこの順序を採用しましたが、自分もどちらがより自然かわからなかったです。
shintaro1993
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Nov 6, 2025
| - [コメント集](https://docs.google.com/document/d/11HV35ADPo9QxJOpJQ24FcZvtvioli770WWdZZDaLOfg/edit?tab=t.0#heading=h.v62rdhwkdymb) | ||
| - https://discord.com/channels/1084280443945353267/1235829049511903273/1276579345099526267 | ||
| - > まとめて 0 fill は、loop unrolling できたりするのでちょっと嬉しいこともあるでしょう。 | ||
| - https://ja.wikipedia.org/wiki/%E3%83%AB%E3%83%BC%E3%83%97%E5%B1%95%E9%96%8B |
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キーワードからいろいろ調べられていて素晴らしいと思いました。自分は loop unrolling を初めて聞いたので調べてみようと思います。
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この問題：https://leetcode.com/problems/move-zeroes/
次の問題：https://leetcode.com/problems/meeting-rooms/