数据结构|堆和树[3]

class Edge<T>(val from: Vertex<T>,
              val to: Vertex<T>,
              val weight: Double? = 0.toDouble()) {
}

class Vertex<T>(var data: T? = null, var index: Int = 0) {
    //val edgeList : List<EdgeList<T>> = emptyList()
    val edges: ArrayList<Edge<T>> = ArrayList()
    var visited = false
    //var distance = 0
    fun addEdge(edge: Edge<T>){
        edges.add(edge)
    }
    override fun toString(): String {
        return data.toString()
    }
}