Authentication and Authorization in Web API -Part1

Simple Graph implementation

The idea is to implement a graph with a adjacency list and traverse the same in
DFS

using System;
using System.Collections.Generic;

public class Graph
{
    private List<int>[] childnodes;
    public Graph(int size)
    {
    this.childnodes=new List<int>[size];
    for(int i=0 ;i<size;i++)
    {
    this.childnodes[i]=new List<int>();
    }
    }

    public Graph(List <int>[] childnodes)
    {
    this.childnodes=childnodes;
    }
    public int Size
    {
    get
    {
    return this.childnodes.Length;
    }
    }
   
    public void AddEdge(int u, int v)
    {
    childnodes[u].Add(v);
    }

    public void RemoveEdge(int u,int v)
    {
    childnodes[u].Remove(v);
    }
    public bool hasEdge(int u,int v)
    {
    int vari=childnodes[u].IndexOf(v);
    if(vari==-1)
    return false;
    else
    return true;
    }
   
    public IList<int> getSuccessors(int v)
    {
    return childnodes[v];
    }
   

}

class GraphComponenets
{
    static Graph graph=new Graph(new List<int>[]{
    new List<int>() {4,5},
    new List<int>() {1,2,6},
    new List<int>() {1,6},
    new List<int>() {6},
    new List<int>() {0},
    new List<int>() {0},
    new List<int>() {1,2,3}});
   
    static bool[] visited=new bool[graph.Size];
    static void TraverseDFS(int v)
    {
    if(!visited[v])
    {
    Console.Write(v+"");
    visited[v]=true;
    foreach(int child in graph.getSuccessors(v))
    {
    TraverseDFS(child);
    }
    }
    }

    static void Main()
    {
    Console.WriteLine("Connected graph componentes");
    for(int v=0;v<graph.Size;v++)
    {
    if(!visited[v])
    {
    TraverseDFS(v);
    Console.WriteLine();
    }
    }
    }

}