From 010a5e3498c82e49eb0a9bdca9e2eb367ee3b3a6 Mon Sep 17 00:00:00 2001
From: tonymythical <174657016+tonymythical@users.noreply.github.com>
Date: Thu, 4 Jun 2026 10:42:10 -0700
Subject: [PATCH] done

---
 src/TraversalPractice.java | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/src/TraversalPractice.java b/src/TraversalPractice.java
index 2aa9b81..2dff445 100644
--- a/src/TraversalPractice.java
+++ b/src/TraversalPractice.java
@@ -10,7 +10,15 @@ public class TraversalPractice {
      * @param node the root of the tree
      */
     public static void printNegativeNodesInOrder(TreeNode node) {
+        if (node == null) return;
 
+        printNegativeNodesInOrder(node.left);
+
+        if (node.data < 0) {
+            System.out.println(node.data);
+        }
+
+        printNegativeNodesInOrder(node.right);
     }
     
     /**
@@ -37,6 +45,13 @@ public static void printNegativeNodesInOrder(TreeNode node) {
      * @return the sum of the leaf node values
      */
     public static int sumLeafNodes(TreeNode node) {
-        return -1;
+        if (node == null) return 0;
+
+        if (node.left == null && node.right == null) {
+            return node.data;
+        }
+
+        return sumLeafNodes(node.left) + sumLeafNodes(node.right);
     }
+   
 }