Create 39. Combination Sum.md#51
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oda
reviewed
May 23, 2025
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| これは常識の範囲でしょうか。 | ||
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| Discordで二件しか引っかからなかったので外れてそう。 |
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スターリングの公式は物理の人は知っています。
なお、計算量は分割数による評価が結構いいやつであると思います。これは常識の外でしょう。
https://discord.com/channels/1084280443945353267/1251052599294296114/1280322673855041587
ああ、なるほど。常識の外という表現は「知らなくてもどうということはなく、知っていても褒められない」ということを表しているのですね。
hroc135
reviewed
Jun 6, 2025
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| こっちはほぼミスらない。 | ||
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| 穴を下に掘る担当(added)と横に展開する担当(index+1)に仕事を渡すイメージ。 |
| sum_combinations = [[] for _ in range(target + 1) ] | ||
| sum_combinations[0].append([]) | ||
| for candidate in candidates: | ||
| for total in range(candidate, target + 1): |
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自分なら range(target - candidate + 1) にすると思いました。
nodchip
reviewed
Jun 6, 2025
| if total == target: | ||
| result.append(takeover_nums[:]) | ||
| break | ||
| next_stack.append([total,takeover_nums[:]]) |
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https://leetcode.com/problems/combination-sum/description/