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Update 24. 两两交换链表中的节点 about rust 优化

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2023-03-29 16:44:08 +08:00
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commit c835ec07b6
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problems/0024.两两交换链表中的节点.md
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@ -410,7 +410,7 @@ impl Solution {
// 递归
impl Solution {
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;
}