Merge pull request youngyangyang04#1989 from fwqaaq/master

Update 24. 两两交换链表中的节点 about rust 优化
nowsoar · Jun 29, 2023 · 1d47b74 · 1d47b74
2 parents 86bbd55 + 0059953
commit 1d47b74
Showing 1 changed file with 1 addition and 1 deletion.
diff --git a/problems/0024.两两交换链表中的节点.md b/problems/0024.两两交换链表中的节点.md
@@ -409,7 +409,7 @@ 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;
         }