def get_neighbours(n, edge_list) :
    """
    get_neighbours(n, edge_list)
    
        Get the neighbours of a vertex n
    
        Inputs
        ------
        n : int
            Index if the vertex
        edge_list : array
            Array of the edges of the graph
    
        Returns
        -------
        neigh : list
            List of the neighbours of n
    """

    neigh = []
    for i in edge_list :
        if n in i :
            if i[0] == n :
                neigh += [i[1]]
            else :
                neigh += [i[0]]
    return neigh