public function setUpperLimitMst()
    {
        $alg = new AlgorithmTspMst($this->graph);
        $this->upperLimit = $alg->getWeight();

        return $this;
    }
public function setUpperLimitMst()
    {
        $alg = new AlgorithmTspMst($this->graph);
        $this->upperLimit = $alg->getWeight();

        return $this;
    }
public function setUpperLimitMst ( ) { $ alg = new AlgorithmTspMst ( $ this -> graph ) ; $ this -> upperLimit = $ alg -> getWeight ( ) ; return $ this ; }
automatically sets upper limit to use for branch-and-bound from the MST heuristic

@return self $this (chainable)
@uses AlgorithmTspMst
automatically sets upper limit to use for branch - and - bound from the MST heuristic