Update 24. 两两交换链表中的节点 about rust 优化

nowsoar · Mar 29, 2023 · c835ec0 · c835ec0
1 parent d2bbea4
commit c835ec0
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
@@ -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;
         }