生成图和图的宽度优先遍历和深度优先遍历

一个图有边和结点，边包含权重、入结点和出结点，结点包含值、入度、出度、next结点集、和边的集合。能够用如下代码表示：java public class Edge { public int weight; public Node from; public Node to; public Edge(int weight, Node from, Node to) { this.weig

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