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potrue
reviewed
Jan 19, 2026
| count += 1 | ||
| return count | ||
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| left_root, right_root = split_bst_helper(copy.deepcopy(root)) |
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関数の中の記述と合わせてsplit_below_v, split_above_vとしてもいいと思いました。
oda
reviewed
Jan 26, 2026
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| ## Step 2. Alternatives | ||
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| - LeetCode版では序盤の分割までで終わり |
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ワンパスでやるならば、split_bst_helper がサイズも返すようにすればいいんですが……。
まあ、速度は速くなるかもしれませんが、複雑さに見合わない気がしますね。
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問題文：https://www.lintcode.com/problem/847/description