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Sep 18, 2025
| while(l < r && !this.isAlphanumeric(s.charAt(l))){ | ||
| l++; | ||
| } | ||
| if(Character.toLowerCase(s.charAt(r)) != Character.toLowerCase(s.charAt(l))){ |
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これ、入力に "***" などが来るとどうなりますかね。この行が実行されて、下に抜けるので一応問題はないはずですが、ちょっと予想した動きではないような感覚を持ちました。
この上で l, r を比較して break するか、while を if に変えて continue するか。
いくつか選択はありそうですが、あまりしっくり来ませんね。
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https://leetcode.com/problems/valid-palindrome/description/