Graph using adjacency list in Java












1












$begingroup$


This is the main code. Here I'm joining vertices by edges.



node gra=new node[5];
{
for (int i = 0; i < 5; i++)
gra[i] = new node(i); //I'm allocating memory for all the vertices.
}
void add_edge(int to,int from) //to represent the vertice the edge is going and from is now self explanatory
{
node new_vert=new node(to);
node temp=gra[from];
while(temp.next!=null)
temp=temp.next;
temp.next=new_vert;
}


Now to do this operation I'm using this loop in main method.



for(int i=0;i<5;i++)  //For simplicity I have taken 5 vertices
{
int n=sc.nextInt(); //N is Number of edges from the vertices, for example in figure for vertex 0 the number of edges are 2.
for(int j=0;j<n;j++)
{
int to=sc.nextInt();
obj.add_edge(to,i);
}
}


Example graph



Is my implementation correct or efficient enough so that I can use this code for further use?



Feel free to ask if you don't understand the code; I will try to explain. I know I'm bad at explaining. And please forgive my English.










share|improve this question









New contributor




Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.







$endgroup$

















    1












    $begingroup$


    This is the main code. Here I'm joining vertices by edges.



    node gra=new node[5];
    {
    for (int i = 0; i < 5; i++)
    gra[i] = new node(i); //I'm allocating memory for all the vertices.
    }
    void add_edge(int to,int from) //to represent the vertice the edge is going and from is now self explanatory
    {
    node new_vert=new node(to);
    node temp=gra[from];
    while(temp.next!=null)
    temp=temp.next;
    temp.next=new_vert;
    }


    Now to do this operation I'm using this loop in main method.



    for(int i=0;i<5;i++)  //For simplicity I have taken 5 vertices
    {
    int n=sc.nextInt(); //N is Number of edges from the vertices, for example in figure for vertex 0 the number of edges are 2.
    for(int j=0;j<n;j++)
    {
    int to=sc.nextInt();
    obj.add_edge(to,i);
    }
    }


    Example graph



    Is my implementation correct or efficient enough so that I can use this code for further use?



    Feel free to ask if you don't understand the code; I will try to explain. I know I'm bad at explaining. And please forgive my English.










    share|improve this question









    New contributor




    Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
    Check out our Code of Conduct.







    $endgroup$















      1












      1








      1





      $begingroup$


      This is the main code. Here I'm joining vertices by edges.



      node gra=new node[5];
      {
      for (int i = 0; i < 5; i++)
      gra[i] = new node(i); //I'm allocating memory for all the vertices.
      }
      void add_edge(int to,int from) //to represent the vertice the edge is going and from is now self explanatory
      {
      node new_vert=new node(to);
      node temp=gra[from];
      while(temp.next!=null)
      temp=temp.next;
      temp.next=new_vert;
      }


      Now to do this operation I'm using this loop in main method.



      for(int i=0;i<5;i++)  //For simplicity I have taken 5 vertices
      {
      int n=sc.nextInt(); //N is Number of edges from the vertices, for example in figure for vertex 0 the number of edges are 2.
      for(int j=0;j<n;j++)
      {
      int to=sc.nextInt();
      obj.add_edge(to,i);
      }
      }


      Example graph



      Is my implementation correct or efficient enough so that I can use this code for further use?



      Feel free to ask if you don't understand the code; I will try to explain. I know I'm bad at explaining. And please forgive my English.










      share|improve this question









      New contributor




      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.







      $endgroup$




      This is the main code. Here I'm joining vertices by edges.



      node gra=new node[5];
      {
      for (int i = 0; i < 5; i++)
      gra[i] = new node(i); //I'm allocating memory for all the vertices.
      }
      void add_edge(int to,int from) //to represent the vertice the edge is going and from is now self explanatory
      {
      node new_vert=new node(to);
      node temp=gra[from];
      while(temp.next!=null)
      temp=temp.next;
      temp.next=new_vert;
      }


      Now to do this operation I'm using this loop in main method.



      for(int i=0;i<5;i++)  //For simplicity I have taken 5 vertices
      {
      int n=sc.nextInt(); //N is Number of edges from the vertices, for example in figure for vertex 0 the number of edges are 2.
      for(int j=0;j<n;j++)
      {
      int to=sc.nextInt();
      obj.add_edge(to,i);
      }
      }


      Example graph



      Is my implementation correct or efficient enough so that I can use this code for further use?



      Feel free to ask if you don't understand the code; I will try to explain. I know I'm bad at explaining. And please forgive my English.







      java graph






      share|improve this question









      New contributor




      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.











      share|improve this question









      New contributor




      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.









      share|improve this question




      share|improve this question








      edited 9 hours ago









      mdfst13

      17.9k62157




      17.9k62157






      New contributor




      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
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      asked 11 hours ago









      Aniket SaxenaAniket Saxena

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      62




      New contributor




      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.





      New contributor





      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






      Aniket Saxena is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
      Check out our Code of Conduct.






















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