val adjList: Map[Int, List[Int]] =
  Map((1, List(2)),(2, List(1,3)),(3, List(2)))

val vertices = adjList.keySet.zipWithIndex

for((vertex, idx) <- vertices)
{
  println(vertices.map({case (v,i) => if(adjList.get(vertex).get.contains(v)) 1 else 0}))
}