Additional helper getWeight()

Author: clue

src/MinimumSpanningTree/Base.php

@@ -54,6 +54,18 @@ abstract public function getEdges();
      */
     abstract protected function getGraph();
 
+    /**
+     * get total weight of minimum spanning tree
+     *
+     * @return float
+     */
+    public function getWeight()
+    {
+        return $this->getEdges()->getSumCallback(function (Edge $edge) {
+            return $edge->getWeight();
+        });
+    }
+
     /**
      * helper method to add a set of Edges to the given set of sorted edges
      *