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X-XsleepZzz
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Feb 22, 2026
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| ```python | ||
| class Solution: | ||
| def twoSum(self, nums: List[int], target: int) -> List[int]: | ||
| num2idx = {} | ||
| for i, num in enumerate(nums): | ||
| required = target - num | ||
| if required in num2idx: | ||
| return [i, num2idx[required]] | ||
| num2idx[num] = i | ||
| raise ValueError("no two sum solution") | ||
|
|
||
| ``` |
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あまり自然言語処理以外のところでtoを2にするのは見ない気がするので、toにしたほうがわかりやすい気がします。(Nand2Tetrisとかはあるので私の感覚がズレてるかもですが)
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to を 2 にしたり、 for を 4 にするのは、十年以上前のハッカー文化を感じます。最近はあまり見かけないように思います。
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問題
https://leetcode.com/problems/two-sum/
成果物所在
1._Two_Sum/memo.mdがステップ1~3までをまとめたmdファイルです．そのほかの変更されたファイルはご放念ください．
2. 次に取り組む問題のリンク
https://leetcode.com/problems/search-insert-position