update 145

fishercoder1534 · fishercoder1534 · commit 3a378769c854 · 2024-08-25T08:00:24.000-07:00
diff --git a/src/main/java/com/fishercoder/solutions/firstthousand/_145.java b/src/main/java/com/fishercoder/solutions/firstthousand/_145.java
@@ -72,8 +72,7 @@ public static class Solution3 {
          * recursive solution is trivial.
          */
         public List<Integer> postorderTraversal(TreeNode root) {
-            List<Integer> result = new ArrayList();
-            return post(root, result);
+            return post(root, new ArrayList());
         }
 
         List<Integer> post(TreeNode root, List<Integer> result) {

Original file line number	Diff line number	Diff line change
`@@ -72,8 +72,7 @@ public static class Solution3 {`
`72`	`72`	`* recursive solution is trivial.`
`73`	`73`	`*/`
`74`	`74`	`public List<Integer> postorderTraversal(TreeNode root) {`
`75`		`- List<Integer> result = new ArrayList();`
`76`		`- return post(root, result);`
	`75`	`+ return post(root, new ArrayList());`
`77`	`76`	`}`
`78`	`77`
`79`	`78`	`List<Integer> post(TreeNode root, List<Integer> result) {`