From 84b9277c90dcf71044a8b8a66a79cdd254de2543 Mon Sep 17 00:00:00 2001
From: algorithmzuo <algorithmzuo@163.com>
Date: Mon, 20 Feb 2023 12:14:25 +0800
Subject: [PATCH] modify code

---
 体系学习班/class10/Code03_UnRecursiveTraversalBT.java | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/体系学习班/class10/Code03_UnRecursiveTraversalBT.java b/体系学习班/class10/Code03_UnRecursiveTraversalBT.java
index 96ef25e..fb3f87c 100644
--- a/体系学习班/class10/Code03_UnRecursiveTraversalBT.java
+++ b/体系学习班/class10/Code03_UnRecursiveTraversalBT.java
@@ -18,7 +18,7 @@ public class Code03_UnRecursiveTraversalBT {
 		System.out.print("pre-order: ");
 		if (head != null) {
 			Stack<Node> stack = new Stack<Node>();
-			stack.add(head);
+			stack.push(head);
 			while (!stack.isEmpty()) {
 				head = stack.pop();
 				System.out.print(head.value + " ");