adding cs235

cs235/final/RedBlackNodeInterface.h

@@ -0,0 +1,43 @@
+//YOU MAY NOT MODIFY THIS DOCUMENT
+#pragma once
+
+#include <string>
+
+using namespace std;
+
+class RedBlackNodeInterface {
+
+public:
+	RedBlackNodeInterface() {}
+	virtual ~RedBlackNodeInterface() {}
+
+	/*
+	 * Returns the word that is stored in this node
+	 *
+	 * @return the word that is stored in this node.
+	 */
+	virtual string getWord() = 0;
+
+	/*
+	 * Returns the color of the node. A red node should return 0
+	 * and a black node should return 1.
+	 *
+	 * @return the color of the node
+	 */
+	virtual int getColor() = 0;
+
+	/*
+	 * Returns the left child of this node or null if it doesn't have one.
+	 *
+	 * @return the left child of this node or null if it doesn't have one.
+	 */
+	virtual RedBlackNodeInterface * getLeftChild() = 0;
+
+	/*
+	 * Returns the right child of this node or null if it doesn't have one.
+	 *
+	 * @return the right child of this node or null if it doesn't have one.
+	 */
+	virtual RedBlackNodeInterface * getRightChild() = 0;
+
+};