adding cs235

cs235/lab10/node.cpp

@@ -0,0 +1,19 @@
+#include "node.h"
+
+node::node(int data): data(data), height(0), right(NULL), left(NULL) {}
+
+int node::getData() {
+    return data;
+}
+
+NodeInterface* node::getLeftChild() {
+    return left;
+}
+
+NodeInterface* node::getRightChild() {
+    return right;
+}
+
+int node::getHeight() {
+    return height;
+}