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oda
reviewed
Jun 22, 2024
oda
reviewed
Jun 22, 2024
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Merge Two Sorted Lists を解きました。レビューお願いいたします🙏
言語: Go
問題: https://leetcode.com/problems/merge-two-sorted-lists/description/
Goでの多重代入について
ここに書かれている通り、まず左側の式と右側の式が通常の順序で評価され、次に左から右の順番で代入が行われる。そのため、
head, head.Next = head.Next, nilと書くと、head = head.Next,head.Next = nilの順に実行される。構造体の初期化
Goでは構造体は
dummy := &ListNode{}またはdummy := new(ListNode)と初期化できる。newよりも構造体リテラルで初期化する前者の方がよく使われる(関数呼び出しのオーバヘッドがない分より高速なのでは?)。どちらも構造体のフィールドはゼロ値で初期化される。