[Hacker Rank] New common lib to build Binary Trees

Author: Gonzalo Diaz

src/hackerrank/lib/Node.ts

@@ -0,0 +1,15 @@
+/* istanbul ignore file */
+
+export class Node<T> {
+  left: Node<T> | null;
+  right: Node<T> | null;
+  data: T;
+
+  constructor(data: T) {
+    this.left = null;
+    this.right = null;
+    this.data = data;
+  }
+}
+
+export default { Node };