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Merge pull request #1989 from fwqaaq/master

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Update 24. 两两交换链表中的节点 about rust 优化
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程序员Carl
2023-06-29 10:00:56 +08:00
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parent 86bbd55888 0059953d8f
commit 1d47b74a20
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problems/0024.两两交换链表中的节点.md
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@ -409,7 +409,7 @@ impl Solution {
// 递归 // 递归
impl Solution { impl Solution {
pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> { pub fn swap_pairs(head: Option<Box<ListNode>>) -> Option<Box<ListNode>> {
if head == None || head.as_ref().unwrap().next == None { if head.is_none() || head.as_ref().unwrap().next.is_none() {
return head; return head;
} }