Create No3.21. Merge Two Sorted Lists.md#3
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colorbox
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May 11, 2024
| return list1; | ||
| } | ||
| if(list1->val > list2->val) { | ||
| swap(list1, list2); |
colorbox
reviewed
May 11, 2024
| class Solution { | ||
| public: | ||
| ListNode* mergeTwoLists(ListNode* list1, ListNode* list2) { | ||
| ListNode dummy_node(0); |
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dummy_nodeという名前よりも、headのような先頭のニュアンスを持つ名前したほうが直感的に読めてわかりやすくなります。
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私はこの名前はどちらも趣味の範囲かなと思います。このノードは、再帰構造を変形したために形式的に必要となったもので返り値には関わらないものであるという意図を強く出すと dummy と呼びたくなります。
colorbox
reviewed
May 11, 2024
| ListNode* tail = &dummy_node; | ||
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| while(list1 && list2) { | ||
| if(list1->val < list2->val) { |
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list1->val < list2->valの関係性をswapを利用して、ループの先頭で維持することで、似たようなことをしているelse節が不要になって読みやすくなりそうです。
また、その際、list1,list2という変数名ではなく、smaller,biggerという変数名にするとそのような関係性であることを変数名から明示できてわかりやすくできます。
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これはコードに対するコメントではなく、PRの作成に関するコメントですが |
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インデント直してください。 |
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