refactor 234

fishercoder1534 · fishercoder1534 · commit bbc078194aa5 · 2020-01-20T11:43:30.000-08:00
diff --git a/src/main/java/com/fishercoder/solutions/_234.java b/src/main/java/com/fishercoder/solutions/_234.java
@@ -44,14 +44,14 @@ public boolean isPalindrome(ListNode head) {
         }
 
         private ListNode reverse(ListNode head) {
-            ListNode pre = null;
+            ListNode newHead = null;
             while (head != null) {
                 ListNode next = head.next;
-                head.next = pre;
-                pre = head;
+                head.next = newHead;
+                newHead = head;
                 head = next;
             }
-            return pre;
+            return newHead;
         }
     }
 

Original file line number	Diff line number	Diff line change
`@@ -44,14 +44,14 @@ public boolean isPalindrome(ListNode head) {`
`44`	`44`	`}`
`45`	`45`
`46`	`46`	`private ListNode reverse(ListNode head) {`
`47`		`- ListNode pre = null;`
	`47`	`+ ListNode newHead = null;`
`48`	`48`	`while (head != null) {`
`49`	`49`	`ListNode next = head.next;`
`50`		`- head.next = pre;`
`51`		`- pre = head;`
	`50`	`+ head.next = newHead;`
	`51`	`+ newHead = head;`
`52`	`52`	`head = next;`
`53`	`53`	`}`
`54`		`- return pre;`
	`54`	`+ return newHead;`
`55`	`55`	`}`
`56`	`56`	`}`
`57`	`57`