779. K-th Symbol in Grammar#34
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nodchip
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Apr 28, 2026
| if n == 2: | ||
| return 0 if k == 1 else 1 | ||
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| mid = pow(2, n - 2) |
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整数の 2 の p 乗を求める際は、 1 << p を使うこともあります。一般に pow() 関数より 1 << p のほうが速いため、原則 1 << p を使ったほうが良いかもしれません。チーム内に不慣れな方がいらっしゃる場合は、避けたほうが良いかもしれません。
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ありがとうございます。
ビットシフトも使うことを思いつきにくかったので、これからは整数の 2 の p 乗を求めるときに最初の案として使うようにします。
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今回の問題
K-th Symbol in Grammar - LeetCode
使用言語
Python