使用 ArrayList 向图形添加顶点 [英] Adding vertices to graph using ArrayList

问题描述

我正在尝试添加创建两个顶点数组列表 (setA, setB)，它将存储存储以便在后期比较它们，但我无法将顶点添加到数组列表中.

I am trying to add create two ArrayList of vertices (setA, setB) which will store the stores for comparing them late how ever I am unable to add vertices to the arraylist.

这是代码

import java.util.*;


public class BipartiteGraph<Vertex> {

    private String strName;
    ArrayList<Vertex>[] vertexList;

    public BipartiteGraph(){

        vertexList = new ArrayList[2];
        vertexList[0] = new ArrayList<Vertex>();
        vertexList[1] = new ArrayList<Vertex>();
        Scanner vertexInput = new Scanner(System.in);
        int vertex;
        vertex = vertexInput.nextInt();
        for(int i = 0; i < 10; i++){
            vertexList[0].add(vertexInput.nextInt());
        }
    }
}

如果我的方向正确，如果有人可以指导我.

Also if someone could guide me if I am in the right direction.

推荐答案

您正在尝试将 int 变量添加到 Vertex 对象的容器中.假设您的 Vertex 有一个接受 int 的构造函数，您应该使用:

You are trying to add int variable into the container of Vertex objects. Assuming, that your Vertex has a constructor accepting int you should rather use:

vertexList[0].add(new Vertex(vertexInput.nextInt()));

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