22. Generate Parenthesis.md #43
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URL: https://leetcode.com/problems/generate-parentheses/description/ Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.
oda
reviewed
Jan 13, 2025
| kargs_mark = (object(),) | ||
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| def copy_generator_for_cache_and_return(*args, **kargs): | ||
| key = args + kargs_mark + tuple(kargs.items()) |
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kargs.items() 順序が入れ替わる可能性があるが、その場合でも本来同じものなのではないでしょうか。
oda
reviewed
Jan 13, 2025
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| ### Step3 | ||
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| - かっこ列について、やはり再帰の直前、直後でpopやappendしたり、nonlocalで管理するよりは、引数で管理するのがわかりやすい |
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Generator 楽しいですが、オーソドックスにこれが一番でしょうね。
Generator のいいところとして、すべて使わないときに計算を省略できるとか中間のメモリーが軽くなることがあるなどはあるでしょう。
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| https://github.com/fhiyo/leetcode/pull/53/files | ||
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| - (, )は英語でleft, rightともいうのか。ただ、left, right１単語だけだと、今見てるindexよりleftかどうかとわからなくなりそう |
| def generateParenthesis(self, n: int) -> List[str]: | ||
| parenthesis = "" | ||
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| def generate_parentheses_helper(left_count_unclosed, rest_right_count): |
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unclosed_left_countのほうが意味がわかると思います
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URL: https://leetcode.com/problems/generate-parentheses/description/
Given n pairs of parentheses, write a function to generate all combinations of well-formed parentheses.