Solved Arai60/779. K-th Symbol in Grammar #46
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tokuhirat
reviewed
Dec 7, 2025
| previous_row_length = 2 ** (n-2) | ||
| if k <= previous_row_length: | ||
| return self.kthGrammar(n-1, k) | ||
| return self.kthGrammar(n-1, k - previous_row_length) ^ 1 |
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previous_row_length の方が step2 で書かれていた previous_end よりわかりやすくなっていると思いました。
引数の演算子の前後にスペースを入れるかどうかは統一した方が良いと思います。
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問題文：https://leetcode.com/problems/k-th-symbol-in-grammar/description/