Right rotate

src/Red-Black.cpp

@@ -145,7 +145,24 @@ void RB::display(Node *node, Trunk *prev, bool left){
 }
 
 void RB::right_rot(Node* node){
+	Node* y = node -> get_lchild();
+	node -> set_lchild(y -> get_rchild());
 
+	if (y -> get_rchild() != nullptr)
+		y -> get_rchild() -> set_parent(node);
+
+	y -> set_parent(node -> get_parent());
+	if (node -> get_parent() == nullptr)
+		this -> root = y;
+
+	else if (node -> get_parent() -> get_rchild() == node)
+		node -> get_parent() -> set_rchild(y);
+
+	else
+		node -> get_parent() -> set_lchild(y);
+
+	y -> set_rchild(node);
+	node -> set_parent(y);
 }
 
 void RB::left_rot(Node* node){