Add constructor for BinaryTree

Apress · Jun 28, 2020 · 17ee28f · 17ee28f
1 parent b012bc3
commit 17ee28f
Showing 1 changed file with 4 additions and 0 deletions.
diff --git a/Chapter15(Trees).js b/Chapter15(Trees).js
@@ -1,3 +1,7 @@
+function BinaryTree() {
+    this._root = null;
+}
+
 BinaryTree.prototype.traverseInOrder = function() {
     traverseInOrderHelper(this._root);