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Snailclimb merged 1 commit into from
Dec 11, 2024
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Update linkedlist-source-code.md #2555

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2 changes: 1 addition & 1 deletion docs/java/collection/linkedlist-source-code.md
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Expand Up @@ -99,7 +99,7 @@ public LinkedList(Collection<? extends E> c) {
`add()` 方法有两个版本：

- `add(E e)`：用于在 `LinkedList` 的尾部插入元素，即将新元素作为链表的最后一个元素，时间复杂度为 O(1)。
- `add(int index, E element)`:用于在指定位置插入元素。这种插入方式需要先移动到指定位置，再修改指定节点的指针完成插入/删除，因此需要移动平均 n/2 个元素，时间复杂度为 O(n)。
- `add(int index, E element)`:用于在指定位置插入元素。这种插入方式需要先移动到指定位置，再修改指定节点的指针完成插入/删除，因此需要移动平均 n/4 个元素，时间复杂度为 O(n)。

```java
// 在链表尾部插入元素
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