49. Group Anagrams - #12
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kazizi55
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July 12, 2026 14:15
chryschron
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Jul 13, 2026
| counts = [0] * 26 | ||
| for c in s: | ||
| alphabet_index = ord(c) - ord("a") | ||
| if not 0 <= alphabet_index < 26: |
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この評価ができない文字コードも一応存在します。
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ありがとうございます。知らなかったので勉強になりました。
確かにa–i (0x81–0x89), j–r (0x91–0x99), s–z (0xA2–0xA9)のような感じでところどころ1飛ばしになっていますね！
https://en.wikipedia.org/wiki/EBCDIC
skypenguins
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Jul 20, 2026
| ## Step 3 | ||
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| - Step 2の解法1で解いた。 | ||
| - 実装がシンプルで分かりやすいのと、"".join(sorted(s)) を使うよりもワンライナーで書いた時の認知負荷が若干こっちの方が低い気がしたのでこちらが好み。 |
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個人的には "".join(sorted(s)) の方が馴染みがありますが、好みの範囲かもしれません。
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list を str に変える方が、色んなことに転用される可能性が多い という理由で私は tuple を使う方が好みと書いていましたが、どちらがいろんなことに転用されうるかというのは読み手の考え方次第だなと思い直したので、確かに好みの範囲かもですね。
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https://leetcode.com/problems/group-anagrams/description/
Next: https://leetcode.com/problems/intersection-of-two-arrays/