def __init__(self, numNodes=0):

        # Call the constructor of the base class :
        Heap.__init__(self)

        # Initialize the indices of all vertices in the Graph to Infinity:
        self.indList = []

        for idx in range(numNodes):
            self.indList.append(np.Inf)
 def __init__(self):
     Heap.__init__(self, "MIN_MERGE_HEAP")