1. Two Sum #3
Merged
1. Two Sum #3
Conversation
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
hayashi-ay
reviewed
Mar 11, 2024
| int currentOther, index; | ||
|
|
||
| for(index = 0; index < nums.size(); index++){ | ||
| currentOther = target - nums[index]; |
There was a problem hiding this comment.
もっといい命名がある気がします。「現在の他」とはどういうことだろうと思いました。pair、complement、numToFindあたりでしょうか？もっと良いのがあるかもしれないですが。
There was a problem hiding this comment.
回答となる組を作るイメージで、nums[i]をcurrentでその片方という意味でcurrentOtherとしてましたが
numToFindのほうがわかりやすいですね
| for(index = 0; index < nums.size(); index++){ | ||
| currentOther = target - nums[index]; | ||
| if(numMap.find(currentOther) != numMap.end()){ | ||
| break; |
There was a problem hiding this comment.
（小田さんのコメントと重複しますが）ここでreturnしてあげれば、int currentOther, indexのスコープをfor文に限定できます。これくらいのコードであれば、変数の数も少ないのでスコープを限定しなくても書けちゃいますが、ある程度複雑になると不必要に脳内のワーキングメモリを使うことになります。
| numMap[nums[index]] = index; | ||
| } | ||
|
|
||
| return { index, numMap[currentOther] }; |
There was a problem hiding this comment.
（これも小田さんのコメントと重複しますが）課題制約で解があることは保証されていますが、解がない場合も考慮してみるとどうでしょうか。
Merged
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
Add this suggestion to a batch that can be applied as a single commit.
This suggestion is invalid because no changes were made to the code.
Suggestions cannot be applied while the pull request is closed.
Suggestions cannot be applied while viewing a subset of changes.
Only one suggestion per line can be applied in a batch.
Add this suggestion to a batch that can be applied as a single commit.
Applying suggestions on deleted lines is not supported.
You must change the existing code in this line in order to create a valid suggestion.
Outdated suggestions cannot be applied.
This suggestion has been applied or marked resolved.
Suggestions cannot be applied from pending reviews.
Suggestions cannot be applied on multi-line comments.
Suggestions cannot be applied while the pull request is queued to merge.
Suggestion cannot be applied right now. Please check back later.
https://leetcode.com/problems/two-sum/