2 add two numbers#6
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liquo-rice
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Jun 5, 2026
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| digit = sum % 10 | ||
| carry = sum // 10 |
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https://docs.python.org/3/library/functions.html#divmod
これですね、存在を知らなかったので勉強になります。ありがとうございます。
nodchip
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Jun 7, 2026
| dummy_head = ListNode() | ||
| node = dummy_head | ||
| carry = 0 | ||
| while node_l1 or node_l2: |
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こちらのコメントをご参照ください。
ksaito0629/leetcode_arai60#1 (comment)
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ありがとうございます。
スタイルガイドを読んでみて、
None は型の上でも [] などとは異なるということで異なる意味合いで使われることも多いので基本的に区別しておきたいのかなと解釈しました。
参考にします。
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この問題：https://leetcode.com/problems/add-two-numbers/
次の問題：https://leetcode.com/problems/valid-parentheses/