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Check if graph is strongly connected or not

Here given code implementation process.

//C Program
//Check if graph is strongly connected or not

#include<stdio.h>

#include<stdlib.h>

struct AjlistNode {
  int vId; //Vertices id
  struct AjlistNode *next;
};

struct Graph {
  int data; //node key value
  struct AjlistNode *next;
};



int size; //number of nodes

//set node key value
void set_data(struct Graph *node) {
  if (node != NULL && size > 0) {
    int index = 0;
    for (index; index < size; index++) {
      //set vertic node data
      node[index].data = index; //set node key
      //Initial no AjlistNode
      //set NULL Value
      node[index].next = NULL;
    }
  } else {
    printf("Vertic Node is Empty");
  }
}
//Add Edge from Two given Nodes
void add_edge(struct Graph *node, int V, int E) {
  //add edge form V to E
  //V and E is Node location
  if (V < size && E < size) {
    //first create Adjacency node
    struct AjlistNode *newEdge = (struct AjlistNode *) malloc(sizeof(struct AjlistNode));
    if (newEdge != NULL) {

      newEdge->next = NULL;
      newEdge->vId = E;

      struct AjlistNode *temp = node[V].next;

      if (temp == NULL) {
        node[V].next = newEdge;
      } else {
        //Add node at last
        while (temp->next != NULL) {
          temp = temp->next;
        }
        temp->next = newEdge;
      }
    } else {
      printf("\n Memory overflow");
    }
  } else {
    //not valid Vertices
    printf("Invalid Node Vertices %d  %d", V, E);
  }
}
//Display Adjacency list of vertex
void print_graph(struct Graph *node) {
  if (node != NULL) {
    struct AjlistNode *temp = NULL;
    for (int index = 0; index < size; index++) {
      printf("\n Adjacency list of vertex %d  :", index);
      temp = node[index].next;
      while (temp != NULL) {
        //temp->vId is graph node vertices
        //in this case temp->vId is same as 
        //node[temp->vId].data

        printf("  %d", node[temp->vId].data);
        temp = temp->next;
      }
    }
  } else {
    printf("Empty Graph");
  }
}



void dfs(int start, int *visit, struct Graph *node) {

  if (start > size || start < 0 || node == NULL) {
    //invalid input
    return;
  }
  if (visit[start] == 1) {
    return;
  }
  visit[start] = 1;
  struct AjlistNode *temp = node[start].next;
  while (temp != NULL) {
    dfs(temp->vId, visit, node);
    temp = temp->next;
  }
}
//Get the path information of given node
void path(int start, int *visit, struct Graph *node) {

  if (start > size || start < 0  || node == NULL) {
    //invalid input
    return;
  }
 
  if (visit[start] != 1) {

    visit[start] = 1;
    struct AjlistNode *temp = node[start].next;
    while (temp != NULL) {
      path(temp->vId, visit, node);
      temp = temp->next;
    }
  }

}
void reset_path(int visit[])
{
  //reset value
  for(int j = 0 ; j < size; j++)
  {
    visit[j] = 0;
  }
}
int visited_status(int visit[])
{
  //reset value
  for(int j = 0 ; j < size; j++)
  {
    if(visit[j] == 0)
    {
      return 0;
    }
  }
  return 1;
}

void connection(struct Graph *node) {

  int result = 1;

  int visit[size];

  for (int i = 1; i < size && result == 1; ++i) {
   
    result = 0;
    reset_path(visit);
    path(i, visit, node);
    
    if(visited_status(visit)==1)
    {
      result = 1;
    }
  
  }
  if (result == 1) {
    printf("\n Strongly Connected Graph\n");
  } else {
    printf("\n Not Strongly Connected Graph\n");
  }
}

int main() {

  size = 5;
  struct Graph *g1 = NULL;
  struct Graph *g2 = NULL;

  g1 = (struct Graph *) malloc(sizeof(struct Graph) *size);

  if (g1 == NULL) 
  {
    printf("\n Memory overflow");
  } 
  else 
  {
    printf("First Graph ");
    //First set node keys
    set_data(g1);


    //Connected two node with Edges
    add_edge(g1, 0, 4);
    add_edge(g1, 1, 0);
    add_edge(g1, 1, 2);
    add_edge(g1, 2, 1);
    add_edge(g1, 2, 4);
    add_edge(g1, 3, 1);
    add_edge(g1, 3, 2);
    add_edge(g1, 4, 3);

    print_graph(g1);
    connection(g1);
  }
  //Case 2
  size = 6;
  g2 = (struct Graph *) malloc(sizeof(struct Graph) *size);

  if (g2 == NULL) 
  {
    printf("\n Memory overflow");
  } 
  else 
  {
    set_data(g2);


    //Connected two node with Edges
    add_edge(g2, 0, 1);
    add_edge(g2, 0, 5);
    add_edge(g2, 1, 2);
    add_edge(g2, 2, 3);
    add_edge(g2, 3, 4);
    add_edge(g2, 4, 1);
    add_edge(g2, 5, 2);
    add_edge(g2, 5, 4);
    printf("\nSecond Graph ");
    print_graph(g2);
    connection(g2);
  }
  return 0;
}

Output

First Graph
 Adjacency list of vertex 0  :  4
 Adjacency list of vertex 1  :  0  2
 Adjacency list of vertex 2  :  1  4
 Adjacency list of vertex 3  :  1  2
 Adjacency list of vertex 4  :  3
 Strongly Connected Graph

Second Graph
 Adjacency list of vertex 0  :  1  5
 Adjacency list of vertex 1  :  2
 Adjacency list of vertex 2  :  3
 Adjacency list of vertex 3  :  4
 Adjacency list of vertex 4  :  1
 Adjacency list of vertex 5  :  2  4
 Not Strongly Connected Graph
// C++ program
// Check if graph is strongly connected or not
#include<iostream>

using namespace std;
class AjlistNode {
	public:

	//Vertices node key
	int id;
	AjlistNode *next;
	AjlistNode(int id) {
		//Set value of node key
		this->id = id;
		this->next = NULL;
	}
};
class Vertices {
	public:
	int data;
	AjlistNode *next;
    Vertices()
    {
      this->data = 0;
      this->next = NULL;
    }
	Vertices(int data) {
		this->data = data;
		this->next = NULL;
	}
};

class MyGraph {
	public:

	//number of Vertices
	int size;
	Vertices *node;
	bool result;
	MyGraph(int size) {
		this->size = size;
		this->result = false;
		this->node = new Vertices[size];
		//set initial values of graph node
		this->set_data();
	}
	//Set initial node value
	void set_data() {
		if (this->node == NULL) {
			cout << "\nEmpty Graph";
		} else {
			int index = 0;
			while (index < this->size) {
				this->node[index] = index;
				index++;
			}
		}
	}
	//Connect two node
	void add_edge(int start, int last) {
		AjlistNode *newEdge = new AjlistNode(last);
		if (this->node[start].next == NULL) {
			//Include first adjacency list node of location start 
			this->node[start].next = newEdge;
		} else {
			AjlistNode *temp = this->node[start].next;
			//Add new node at the last of edge
			while (temp->next != NULL) {
				temp = temp->next;
			}
			//Add node 
			temp->next = newEdge;
		}
	}
	//Display graph elements
	void print_graph() {
		if (this->size > 0 &&
			this->node != NULL) {
			int index = 0;
			while (index < this->size) {
				cout << "\nAdjacency list of vertex " << index << " : ";
				AjlistNode *temp = this->node[index].next;
				while (temp != NULL) {
					cout << this->node[temp->id].data << " ";
					temp = temp->next;
				}
				index++;
			}
		}
	}
	void dfs(int start, bool visit[]) {
		if (start > this->size ||
			start < 0 ||
			this->node == NULL) {
			//invalid input

			return;
		}
		if (visit[start] == true) {
			return;
		}
		AjlistNode *temp = this->node[start].next;
		visit[start] = true;
		while (temp != NULL) {
			this->dfs(temp->id, visit);
			temp = temp->next;
		}
	}
	//Check path between two nodes
	void path(int start, bool visit[]) {
		if (start > this->size ||
			start < 0 ||
			this->node == NULL) {
			//invalid input

			return;
		}
		if (visit[start] == true) {
			return;
		}
		if (this->result == false) {
			visit[start] = true;
			AjlistNode *temp = this->node[start].next;
			while (temp != NULL) {
				this->path(temp->id, visit);
				temp = temp->next;
			}
		}
	}
	void reset_path(bool visit[]) {
		//reset value

		for (int j = 0; j < this->size; j++) {
			visit[j] = false;
		}
	}
	bool visited_status(bool visit[]) {
		//reset value

		for (int j = 0; j < this->size; j++) {
			if (visit[j] == false) {
				return false;
			}
		}
		return true;
	}
	void connection() {
		bool visit[size];
		this->result = true;
		for (int i = 0; i < this->size &&
			this->result == true; ++i) {
			this->reset_path(visit);
			this->result = false;
			this->path(i, visit);
			//Check that whether i node are connected to other node
			if (this->visited_status(visit) == true) {
				this->result = true;
			}
		}
		if (this->result == true) {
			cout << "\n Strongly Connected Graph\n";
		} else {
			cout << "\n Not Strongly Connected Graph\n";
		}
	}
};
int main() {
	MyGraph g1 =  MyGraph(5);
	//Connected two node with Edges
	g1.add_edge(0, 4);
	g1.add_edge(1, 0);
	g1.add_edge(1, 2);
	g1.add_edge(2, 1);
	g1.add_edge(2, 4);
	g1.add_edge(3, 1);
	g1.add_edge(3, 2);
	g1.add_edge(4, 3);
	cout << "First Graph";
	g1.print_graph();
	g1.connection();
	MyGraph g2 = MyGraph(6);
	//Connected two node with Edges
	g2.add_edge(0, 1);
	g2.add_edge(0, 5);
	g2.add_edge(1, 2);
	g2.add_edge(2, 2);
	g2.add_edge(2, 3);
	g2.add_edge(3, 4);
	g2.add_edge(4, 1);
	g2.add_edge(5, 2);
	g2.add_edge(5, 4);
	cout << "\nSecond Graph";
	g2.print_graph();
	g2.connection();
	return 0;
}

Output

First Graph
Adjacency list of vertex 0 : 4
Adjacency list of vertex 1 : 0 2
Adjacency list of vertex 2 : 1 4
Adjacency list of vertex 3 : 1 2
Adjacency list of vertex 4 : 3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0 : 1 5
Adjacency list of vertex 1 : 2
Adjacency list of vertex 2 : 2 3
Adjacency list of vertex 3 : 4
Adjacency list of vertex 4 : 1
Adjacency list of vertex 5 : 2 4
 Not Strongly Connected Graph
// Java program
// Check if graph is strongly connected or not

class AjlistNode {
  //Vertices node key
  public int id; 
  public AjlistNode next;

  public AjlistNode(int id) {
    //Set value of node key
    this.id = id;
    this.next = null;
  }
}
class Vertices {

  public int data;
  public AjlistNode next;

  public Vertices(int data) {
    this.data = data;
    this.next = null;
  }
}

public class MyGraph {


  //number of Vertices
  private int size;

  private Vertices[] node;

  private boolean result ;

  public MyGraph(int size) {

    this.size = size;
    this.result = false;
    this.node = new Vertices[size];
    //set initial values of graph node
    this.set_data();


  }

  //Set initial node value
  public void set_data() {
    if (node == null) {
      System.out.println("\nEmpty Graph");
    } else {

      int index = 0;

      while (index < size) {
  
        node[index] = new Vertices(index);

        index++;
      }
    }
  }


  //Connect two node
  public void add_edge(int start, int last) {
    AjlistNode newEdge = new AjlistNode(last);

    if (node[start].next == null) 
    {
      //Include first adjacency list node of location start 
      node[start].next = newEdge;
    }
    else 
    {
      AjlistNode temp = node[start].next;
      //Add new node at the last of edge
      while (temp.next != null) 
      {
        temp = temp.next;
      }
      //Add node 
      temp.next = newEdge;
    }
  }
  //Display graph elements
  public void print_graph() {

    if (size > 0 && node != null) {
      int index = 0;
      while (index < size) {
        System.out.print("\nAdjacency list of vertex " + index + " : ");
        AjlistNode temp = node[index].next;
        while (temp != null) {
          System.out.print(node[temp.id].data + "  ");
          temp = temp.next;
        }
        index++;
      }
    }
  }



  public void dfs(int start, boolean []visit) {

    if (start > size || start < 0 || node == null) {
      //invalid input
      return;
    }
    if (visit[start] == true) {
      return;
    }
    
    AjlistNode temp = node[start].next;
    visit[start] = true;
    while (temp != null) {
      dfs(temp.id, visit);
      temp = temp.next;
    }
  }
  //Check path between two nodes
  public void path(int start, boolean []visit) {

    if (start > size || start < 0  || node == null) {
      //invalid input
      return;
    }
    if (visit[start] == true) {
      return;
    }
    if (this.result == false) {

      visit[start] = true;
       AjlistNode temp = node[start].next;
      while (temp != null) {
        path(temp.id, visit);
        temp = temp.next;
      }
    }

  }

  public void reset_path(boolean []visit)
  {
    //reset value
    for(int j = 0 ; j < this.size; j++)
    {
      visit[j]=false;
    }
  }
  public boolean visited_status(boolean []visit)
  {
    //reset value
    for(int j = 0 ; j < this.size; j++)
    {
      if(visit[j]==false)
      {
        return false;
      }
    }

    return true;

  }
  public void connection() {
    
    //Auxiliary space which is used to store information about 
    // node is visit or not
    boolean []visit = new boolean[size];
    
    this.result = true;

    for (int i = 0; i < size && this.result == true; ++i) {
     
      reset_path(visit);
      
      this.result = false;
      
      this.path(i, visit);

      //Check that whether i node are connected to other node
      if(visited_status(visit)==true)
      {
        this.result = true;
      }
     
    }
    if (this.result == true) {
      System.out.print("\n Strongly Connected Graph\n");
    } else {
      System.out.print("\n Not Strongly Connected Graph\n");
    }
  }


  public static void main(String[] args) {


    MyGraph g1 = new MyGraph(5);
   
    //Connected two node with Edges
    g1.add_edge(0, 4);
    g1.add_edge(1, 0);
    g1.add_edge(1, 2);
    g1.add_edge(2, 1);
    g1.add_edge(2, 4);
    g1.add_edge(3, 1);
    g1.add_edge(3, 2);
    g1.add_edge(4, 3);
    System.out.print("First Graph");
    g1.print_graph();
    g1.connection();



    MyGraph g2 = new MyGraph(6);
        //Connected two node with Edges
    g2.add_edge( 0, 1);
    g2.add_edge( 0, 5);
    g2.add_edge( 1, 2);
    g2.add_edge( 2, 2);
    g2.add_edge( 2, 3);
    g2.add_edge( 3, 4);
    g2.add_edge( 4, 1);
    g2.add_edge( 5, 2);
    g2.add_edge( 5, 4);
    System.out.print("\nSecond Graph");
    g2.print_graph();
    g2.connection();

  }
}

Output

First Graph
Adjacency list of vertex 0 : 4  
Adjacency list of vertex 1 : 0  2  
Adjacency list of vertex 2 : 1  4  
Adjacency list of vertex 3 : 1  2  
Adjacency list of vertex 4 : 3  
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0 : 1  5  
Adjacency list of vertex 1 : 2  
Adjacency list of vertex 2 : 2  3  
Adjacency list of vertex 3 : 4  
Adjacency list of vertex 4 : 1  
Adjacency list of vertex 5 : 2  4  
 Not Strongly Connected Graph

// C# program
// Check if graph is strongly connected or not
using System;
public class AjlistNode {
	//Vertices node key
	public int id;
	public AjlistNode next;
	public AjlistNode(int id) {
		//Set value of node key
		this.id = id;
		this.next = null;
	}
}
public class Vertices {
	public int data;
	public AjlistNode next;
	public Vertices(int data) {
		this.data = data;
		this.next = null;
	}
}

public class MyGraph {
	//number of Vertices
	private int size;
	private Vertices[] node;
	private Boolean result;
	public MyGraph(int size) {
		this.size = size;
		this.result = false;
		this.node = new Vertices[size];
		this.set_data();
	}
	//Set initial node value
	public void set_data() {
		if (node == null) {
			Console.WriteLine("\nEmpty Graph");
		} else {
			int index = 0;
			while (index < size) {
				node[index] = new Vertices(index);
				index++;
			}
		}
	}
	//Connect two node
	public void add_edge(int start, int last) {
		AjlistNode newEdge = new AjlistNode(last);
		if (node[start].next == null) {
			//Include first adjacency list node of location start 
			node[start].next = newEdge;
		} else {
			AjlistNode temp = node[start].next;
			//Add new node at the last of edge
			while (temp.next != null) {
				temp = temp.next;
			}
			//Add node 
			temp.next = newEdge;
		}
	}
	//Display graph elements
	public void print_graph() {
		if (size > 0 &&
			node != null) {
			int index = 0;
			while (index < size) {
				Console.Write("\nAdjacency list of vertex " + index + " : ");
				AjlistNode temp = node[index].next;
				while (temp != null) {
					Console.Write(node[temp.id].data + " ");
					temp = temp.next;
				}
				index++;
			}
		}
	}
	public void dfs(int start, Boolean[] visit) {
		if (start > size ||
			start < 0 ||
			node == null) {
			return;
		}
		if (visit[start] == true) {
			return;
		}
		AjlistNode temp = node[start].next;
		visit[start] = true;
		while (temp != null) {
			dfs(temp.id, visit);
			temp = temp.next;
		}
	}
	//Check path between two nodes
	public void path(int start, Boolean[] visit) {
		if (start > size ||
			start < 0 ||
			node == null) {
			return;
		}
		if (visit[start] == true) {
			return;
		}
		if (this.result == false) {
			visit[start] = true;
			AjlistNode temp = node[start].next;
			while (temp != null) {
				path(temp.id, visit);
				temp = temp.next;
			}
		}
	}
	public void reset_path(Boolean[] visit) {
		//reset value

		for (int j = 0; j < this.size; j++) {
			visit[j] = false;
		}
	}
	public Boolean visited_status(Boolean[] visit) {
		//reset value

		for (int j = 0; j < this.size; j++) {
			if (visit[j] == false) {
				return false;
			}
		}
		return true;
	}
	public void connection() {
		Boolean[]
		//Auxiliary space which is used to store information about 
		// node is visit or not
		visit = new Boolean[size];
		this.result = true;
		for (int i = 0; i < size &&
			this.result == true; ++i) {
			reset_path(visit);
			this.result = false;
			this.path(i, visit);
			//Check that whether i node are connected to other node

			if (visited_status(visit) == true) {
				this.result = true;
			}
		}
		if (this.result == true) {
			Console.Write("\n Strongly Connected Graph\n");
		} else {
			Console.Write("\n Not Strongly Connected Graph\n");
		}
	}
	public static void Main(String[] args) {
		MyGraph g1 = new MyGraph(5);
		g1.add_edge(0, 4);
		g1.add_edge(1, 0);
		g1.add_edge(1, 2);
		g1.add_edge(2, 1);
		g1.add_edge(2, 4);
		g1.add_edge(3, 1);
		g1.add_edge(3, 2);
		g1.add_edge(4, 3);
		Console.Write("First Graph");
		g1.print_graph();
		g1.connection();
		MyGraph g2 = new MyGraph(6);
		g2.add_edge(0, 1);
		g2.add_edge(0, 5);
		g2.add_edge(1, 2);
		g2.add_edge(2, 2);
		g2.add_edge(2, 3);
		g2.add_edge(3, 4);
		g2.add_edge(4, 1);
		g2.add_edge(5, 2);
		g2.add_edge(5, 4);
		Console.Write("\nSecond Graph");
		g2.print_graph();
		g2.connection();
	}
}

Output

First Graph
Adjacency list of vertex 0 : 4
Adjacency list of vertex 1 : 0 2
Adjacency list of vertex 2 : 1 4
Adjacency list of vertex 3 : 1 2
Adjacency list of vertex 4 : 3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0 : 1 5
Adjacency list of vertex 1 : 2
Adjacency list of vertex 2 : 2 3
Adjacency list of vertex 3 : 4
Adjacency list of vertex 4 : 1
Adjacency list of vertex 5 : 2 4
 Not Strongly Connected Graph
<?php
// Php program
// Check if graph is strongly connected or not
class AjlistNode {
	//Vertices node key

	public $id;
	public $next;

	function __construct($id) {
		//Set value of node key
		$this->id = $id;
		$this->next = null;
	}
}
class Vertices {
	public $data;
	public $next;

	function __construct($data) {
		$this->data = $data;
		$this->next = null;
	}
}
class MyQueue {
	public $element;
	public $next;

	function __construct($element) {
		$this->element = $element;
		$this->next = null;
	}
}
class MyGraph {
	//number of Vertices

	private $size;
	private $node;
	private $result;

	function __construct($size) {
		$this->size = $size;
		$this->result = false;
		$this->node = array_fill(0, $size, 0);
		//set initial values of graph node
		$this->set_data();
	}
	//Set initial node value

	public 	function set_data() {
		if ($this->node == null) {
			echo("\nEmpty Graph");
		} else {
			$index = 0;
			while ($index < $this->size) {
				$this->node[$index] = new Vertices($index);
				$index++;
			}
		}
	}
	//Connect two node

	public 	function add_edge($start, $last) {
		$newEdge = new AjlistNode($last);
		if ($this->node[$start]->next == null) {
			//Include first adjacency list node of location start 
			$this->node[$start]->next = $newEdge;
		} else {
			$temp = $this->node[$start]->next;
			//Add new node at the last of edge
			while ($temp->next != null) {
				$temp = $temp->next;
			}
			//Add node 
			$temp->next = $newEdge;
		}
	}
	//Display graph elements

	public 	function print_graph() {
		if ($this->size > 0 &&
			$this->node != null) {
			$index = 0;
			while ($index < $this->size) {
				echo("\nAdjacency list of vertex ". $index ." : ");
				$temp = $this->node[$index]->next;
				while ($temp != null) {
					echo($this->node[$temp->id]->data ." ");
					$temp = $temp->next;
				}
				$index++;
			}
		}
	}
	public 	function dfs($start, & $visit) {
		if ($start > $this->size ||
			$start < 0 ||
			$this->node == null) {
			return;
		}
		if ($visit[$start] == true) {
			return;
		}
		$temp = $this->node[$start]->next;
		$visit[$start] = true;
		while ($temp != null) {
			$this->dfs($temp->id, $visit);
			$temp = $temp->next;
		}
	}
	//Check path between two nodes

	public 	function path($start, & $visit) {
		if ($start > $this->size ||
			$start < 0 ||
			$this->node == null) {
			return;
		}
		if ($visit[$start] == true) {
			return;
		}
		if ($this->result == false) {
			$visit[$start] = true;
			$temp = $this->node[$start]->next;
			while ($temp != null) {
				$this->path($temp->id, $visit);
				$temp = $temp->next;
			}
		}
	}
	public 	function reset_path( & $visit) {
		//reset value

		for ($j = 0; $j < $this->size; $j++) {
			$visit[$j] = false;
		}
	}
	public 	function visited_status( & $visit) {
		//reset value

		for ($j = 0; $j < $this->size; $j++) {
			if ($visit[$j] == false) {
				return false;
			}
		}
		return true;
	}
	public 	function connection() {
		//Auxiliary space which is used to store information about 
		// node is visit or not
		$visit = array_fill(0, $this->size, false);
		$this->result = true;
		for ($i = 0; $i < $this->size &&
			$this->result == true; ++$i) {
			$this->reset_path($visit);
			$this->result = false;
			$this->path($i, $visit);
			//Check that whether i node are connected to other node

			if ($this->visited_status($visit) == true) {
				$this->result = true;
			}
		}
		if ($this->result == true) {
			echo("\n Strongly Connected Graph\n");
		} else {
			echo("\n Not Strongly Connected Graph\n");
		}
	}
}

function main() {
	$g1 = new MyGraph(5);
	//Connected two node with Edges
	$g1->add_edge(0, 4);
	$g1->add_edge(1, 0);
	$g1->add_edge(1, 2);
	$g1->add_edge(2, 1);
	$g1->add_edge(2, 4);
	$g1->add_edge(3, 1);
	$g1->add_edge(3, 2);
	$g1->add_edge(4, 3);
	echo("First Graph");
	$g1->print_graph();
	$g1->connection();
	$g2 = new MyGraph(6);
	//Connected two node with Edges
	$g2->add_edge(0, 1);
	$g2->add_edge(0, 5);
	$g2->add_edge(1, 2);
	$g2->add_edge(2, 2);
	$g2->add_edge(2, 3);
	$g2->add_edge(3, 4);
	$g2->add_edge(4, 1);
	$g2->add_edge(5, 2);
	$g2->add_edge(5, 4);
	echo("\nSecond Graph");
	$g2->print_graph();
	$g2->connection();

}
main();

Output

First Graph
Adjacency list of vertex 0 : 4
Adjacency list of vertex 1 : 0 2
Adjacency list of vertex 2 : 1 4
Adjacency list of vertex 3 : 1 2
Adjacency list of vertex 4 : 3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0 : 1 5
Adjacency list of vertex 1 : 2
Adjacency list of vertex 2 : 2 3
Adjacency list of vertex 3 : 4
Adjacency list of vertex 4 : 1
Adjacency list of vertex 5 : 2 4
 Not Strongly Connected Graph
// Node Js program
// Check if graph is strongly connected or not
class AjlistNode {
	//Vertices node key

	constructor(id) {
		//Set value of node key
		this.id = id;
		this.next = null;
	}
}
class Vertices {
	constructor(data) {
		this.data = data;
		this.next = null;
	}
}

class MyGraph {
	//number of Vertices

	constructor(size) {
		this.size = size;
		this.result = false;
		this.node = Array(size).fill(null);
		//set initial values of graph node
		this.set_data();
	}

	//Set initial node value
	set_data() {
		if (this.node == null) {
			process.stdout.write("\nEmpty Graph");
		} else {
			var index = 0;
			while (index < this.size) {
				this.node[index] = new Vertices(index);
				index++;
			}
		}
	}

	//Connect two node
	add_edge(start, last) {
		var newEdge = new AjlistNode(last);
		if (this.node[start].next == null) {
			//Include first adjacency list node of location start 
			this.node[start].next = newEdge;
		} else {
			var temp = this.node[start].next;
			//Add new node at the last of edge
			while (temp.next != null) {
				temp = temp.next;
			}

			//Add node 
			temp.next = newEdge;
		}
	}

	//Display graph elements
	print_graph() {
		if (this.size > 0 &&
			this.node != null) {
			var index = 0;
			while (index < this.size) {
				process.stdout.write("\nAdjacency list of vertex " + index + " : ");
				var temp = this.node[index].next;
				while (temp != null) {
					process.stdout.write(this.node[temp.id].data + " ");
					temp = temp.next;
				}
				index++;
			}
		}
	}
	dfs(start, visit) {
		if (start > this.size ||
			start < 0 ||
			this.node == null) {
			return;
		}

		if (visit[start] == true) {
			return;
		}
		var temp = this.node[start].next;
		visit[start] = true;
		while (temp != null) {
			this.dfs(temp.id, visit);
			temp = temp.next;
		}
	}

	//Check path between two nodes
	path(start, visit) {
		if (start > this.size ||
			start < 0 ||
			this.node == null) {
			return;
		}

		if (visit[start] == true) {
			return;
		}

		if (this.result == false) {
			visit[start] = true;
			var temp = this.node[start].next;
			while (temp != null) {
				this.path(temp.id, visit);
				temp = temp.next;
			}
		}
	}
	reset_path(visit) {
		//reset value

		for (var j = 0; j < this.size; j++) {
			visit[j] = false;
		}
	}
	visited_status(visit) {
		//reset value

		for (var j = 0; j < this.size; j++) {
			if (visit[j] == false) {
				return false;
			}
		}

		return true;
	}
	connection() {
		//Auxiliary space which is used to store information about 
		// node is visit or not
		var visit = Array(this.size).fill(false);
		this.result = true;
		for (var i = 0; i < this.size &&
			this.result == true; ++i) {
			this.reset_path(visit);
			this.result = false;
			this.path(i, visit);
			//Check that whether i node are connected to other node

			if (this.visited_status(visit) == true) {
				this.result = true;
			}
		}

		if (this.result == true) {
			process.stdout.write("\n Strongly Connected Graph\n");
		} else {
			process.stdout.write("\n Not Strongly Connected Graph\n");
		}
	}
}

function main(args) {
	var g1 = new MyGraph(5);
	//Connected two node with Edges
	g1.add_edge(0, 4);
	g1.add_edge(1, 0);
	g1.add_edge(1, 2);
	g1.add_edge(2, 1);
	g1.add_edge(2, 4);
	g1.add_edge(3, 1);
	g1.add_edge(3, 2);
	g1.add_edge(4, 3);
	process.stdout.write("First Graph");
	g1.print_graph();
	g1.connection();
	var g2 = new MyGraph(6);
	//Connected two node with Edges
	g2.add_edge(0, 1);
	g2.add_edge(0, 5);
	g2.add_edge(1, 2);
	g2.add_edge(2, 2);
	g2.add_edge(2, 3);
	g2.add_edge(3, 4);
	g2.add_edge(4, 1);
	g2.add_edge(5, 2);
	g2.add_edge(5, 4);
	process.stdout.write("\nSecond Graph");
	g2.print_graph();
	g2.connection();
}

main();

Output

First Graph
Adjacency list of vertex 0 : 4
Adjacency list of vertex 1 : 0 2
Adjacency list of vertex 2 : 1 4
Adjacency list of vertex 3 : 1 2
Adjacency list of vertex 4 : 3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0 : 1 5
Adjacency list of vertex 1 : 2
Adjacency list of vertex 2 : 2 3
Adjacency list of vertex 3 : 4
Adjacency list of vertex 4 : 1
Adjacency list of vertex 5 : 2 4
 Not Strongly Connected Graph
#  Python 3 program
#  Check if graph is strongly connected or not
class AjlistNode :
	
	def __init__(self, id) :
		# Set value of node key
		self.id = id
		self.next = None
	

class Vertices :
	
	def __init__(self, data) :
		self.data = data
		self.next = None
class MyGraph :

	def __init__(self, size) :
		self.size = size
		self.result = False
		self.node = [0] * size
		# set initial values of graph node
		self.set_data()
	
	# Set initial node value
	def set_data(self) :
		if (self.node == None) :
			print("\nEmpty Graph", end = "")
		else :
			index = 0
			while (index < self.size) :
				self.node[index] = Vertices(index)
				index += 1
			
		
	
	# Connect two node
	def add_edge(self, start, last) :
		newEdge = AjlistNode(last)
		if (self.node[start].next == None) :
			# Include first adjacency list node of location start 
			self.node[start].next = newEdge
		else :
			temp = self.node[start].next
			# Add new node at the last of edge
			while (temp.next != None) :
				temp = temp.next
			
			# Add node 
			temp.next = newEdge
		
	
	# Display graph elements
	def print_graph(self) :
		if (self.size > 0 and self.node != None) :
			index = 0
			while (index < self.size) :
				print("\nAdjacency list of vertex ", index ," : ", end = "")
				temp = self.node[index].next
				while (temp != None) :
					print(self.node[temp.id].data ," ", end = "")
					temp = temp.next
				
				index += 1
			
		
	
	def dfs(self, start, visit) :
		if (start > self.size or start < 0 or self.node == None) :
			return
		
		if (visit[start] == True) :
			return
		
		temp = self.node[start].next
		visit[start] = True
		while (temp != None) :
			self.dfs(temp.id, visit)
			temp = temp.next
		
	
	# Check path between two nodes
	def path(self, start, visit) :
		if (start > self.size or start < 0 or self.node == None) :
			return
		
		if (visit[start] == True) :
			return
		
		if (self.result == False) :
			visit[start] = True
			temp = self.node[start].next
			while (temp != None) :
				self.path(temp.id, visit)
				temp = temp.next
			
		
	
	def reset_path(self, visit) :
		# reset value
		j = 0
		while (j < self.size) :
			visit[j] = False
			j += 1
		
	
	def visited_status(self, visit) :
		# check visited value
		j = 0
		while (j < self.size) :
			if (visit[j] == False) :
				return False
			
			j += 1
		
		return True
	
	def connection(self) :
		#  node is visit or not
		# Auxiliary space which is used to store information about 
		#  node is visit or not
		visit = [False] * self.size
		self.result = True
		i = 0
		while (i < self.size and self.result == True) :
			self.reset_path(visit)
			self.result = False
			self.path(i, visit)
			# Check that whether i node are connected to other node
			if (self.visited_status(visit) == True) :
				self.result = True
			
			i += 1
		
		if (self.result == True) :
			print("\n Strongly Connected Graph\n", end = "")
		else :
			print("\n Not Strongly Connected Graph\n", end = "")
		
	

def main() :
	g1 = MyGraph(5)
	# Connected two node with Edges
	g1.add_edge(0, 4)
	g1.add_edge(1, 0)
	g1.add_edge(1, 2)
	g1.add_edge(2, 1)
	g1.add_edge(2, 4)
	g1.add_edge(3, 1)
	g1.add_edge(3, 2)
	g1.add_edge(4, 3)
	print("First Graph", end = "")
	g1.print_graph()
	g1.connection()
	g2 = MyGraph(6)
	# Connected two node with Edges
	g2.add_edge(0, 1)
	g2.add_edge(0, 5)
	g2.add_edge(1, 2)
	g2.add_edge(2, 2)
	g2.add_edge(2, 3)
	g2.add_edge(3, 4)
	g2.add_edge(4, 1)
	g2.add_edge(5, 2)
	g2.add_edge(5, 4)
	print("\nSecond Graph", end = "")
	g2.print_graph()
	g2.connection()


if __name__ == "__main__":
	main()

Output

First Graph
Adjacency list of vertex  0  : 4
Adjacency list of vertex  1  : 0  2
Adjacency list of vertex  2  : 1  4
Adjacency list of vertex  3  : 1  2
Adjacency list of vertex  4  : 3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex  0  : 1  5
Adjacency list of vertex  1  : 2
Adjacency list of vertex  2  : 2  3
Adjacency list of vertex  3  : 4
Adjacency list of vertex  4  : 1
Adjacency list of vertex  5  : 2  4
 Not Strongly Connected Graph
#  Ruby program 
#  Check if graph is strongly connected or not
class AjlistNode
    # Define the accessor and reader of class AjlistNode
    attr_reader :id, :next
    attr_accessor :id, :next 
	 # Vertices node key
	
	def initialize(id) 
		 # Set value of node key
		self.id = id
		self.next = nil
	end
end
class Vertices
    # Define the accessor and reader of class Vertices
    attr_reader :data, :next
    attr_accessor :data, :next 
	
	def initialize(data) 
		self.data = data
		self.next = nil
	end
end

class MyGraph
    # Define the accessor and reader of class MyGraph
    attr_reader :size, :node, :result
    attr_accessor :size, :node, :result 
	
	def initialize(size) 
		self.size = size
		self.result = false
		self.node = Array.new(size) {nil}
		 # set initial values of graph node
		self.set_data()
	end
	 # Set initial node value
	def set_data() 
		if (@node == nil) 
			print("\nEmpty Graph")
		else 
			index = 0
			while (index < @size) 
				@node[index] = Vertices.new(index)
				index += 1
			end
		end
	end
	 # Connect two node
	def add_edge(start, last) 
		newEdge = AjlistNode.new(last)
		if (@node[start].next == nil) 
			 # Include first adjacency list node of location start 
			@node[start].next = newEdge
		else 
			temp = @node[start].next
			 # Add new node at the last of edge
			while (temp.next != nil) 
				temp = temp.next
			end
			 # Add node 
			temp.next = newEdge
		end
	end
	 # Display graph elements
	def print_graph() 
		if (@size > 0 &&
			@node != nil) 
			index = 0
			while (index < @size) 
				print("\nAdjacency list of vertex ", index ,"  : ")
				temp = @node[index].next
				while (temp != nil) 
					print(@node[temp.id].data ," ")
					temp = temp.next
				end
				index += 1
			end
		end
	end
	def dfs(start, visit) 
		if (start > @size ||
			start < 0 ||
			@node == nil) 
			return
		end
		if (visit[start] == true) 
			return
		end
		temp = @node[start].next
		visit[start] = true
		while (temp != nil) 
			self.dfs(temp.id, visit)
			temp = temp.next
		end
	end
	 # Check path between two nodes
	def path(start, visit) 
		if (start > @size ||
			start < 0 ||
			@node == nil) 
			return
		end
		if (visit[start] == true) 
			return
		end
		if (self.result == false) 
			visit[start] = true
			temp = @node[start].next
			while (temp != nil) 
				self.path(temp.id, visit)
				temp = temp.next
			end
		end
	end
	def reset_path(visit) 
		 # reset value
		j = 0
		while (j < self.size) 
			visit[j] = false
			j += 1
		end
	end
	def visited_status(visit) 
		 # check visited value
		j = 0
		while (j < self.size) 
			if (visit[j] == false) 
				return false
			end
			j += 1
		end
		return true
	end
	def connection() 
		
		 # Auxiliary space which is used to store information about 
		 #  node is visit or not
		visit = Array.new(@size) {false}
		self.result = true
		i = 0
		while (i < @size &&
			self.result == true) 
			self.reset_path(visit)
			self.result = false
			self.path(i, visit)
			 # Check that whether i node are connected to other node
			if (self.visited_status(visit) == true) 
				self.result = true
			end
			i += 1
		end
		if (self.result == true) 
			print("\n Strongly Connected Graph\n")
		else 
			print("\n Not Strongly Connected Graph\n")
		end
	end
end
def main() 
	g1 = MyGraph.new(5)
	 # Connected two node with Edges
	g1.add_edge(0, 4)
	g1.add_edge(1, 0)
	g1.add_edge(1, 2)
	g1.add_edge(2, 1)
	g1.add_edge(2, 4)
	g1.add_edge(3, 1)
	g1.add_edge(3, 2)
	g1.add_edge(4, 3)
	print("First Graph")
	g1.print_graph()
	g1.connection()
	g2 = MyGraph.new(6)
	 # Connected two node with Edges
	g2.add_edge(0, 1)
	g2.add_edge(0, 5)
	g2.add_edge(1, 2)
	g2.add_edge(2, 2)
	g2.add_edge(2, 3)
	g2.add_edge(3, 4)
	g2.add_edge(4, 1)
	g2.add_edge(5, 2)
	g2.add_edge(5, 4)
	print("\nSecond Graph")
	g2.print_graph()
	g2.connection()
end
main()

Output

First Graph
Adjacency list of vertex 0  : 4 
Adjacency list of vertex 1  : 0 2 
Adjacency list of vertex 2  : 1 4 
Adjacency list of vertex 3  : 1 2 
Adjacency list of vertex 4  : 3 
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0  : 1 5 
Adjacency list of vertex 1  : 2 
Adjacency list of vertex 2  : 2 3 
Adjacency list of vertex 3  : 4 
Adjacency list of vertex 4  : 1 
Adjacency list of vertex 5  : 2 4 
 Not Strongly Connected Graph

// Scala program
// Check if graph is strongly connected or not
class AjlistNode(var id: Int,
	var next: AjlistNode) {

	def this(id: Int) {
		//Set value
      	this(id,null);
	}
}
class Vertices(var data: Int,
	var next: AjlistNode) {

	def this(data: Int) {
		this(data,null);
	}
}

class MyGraph(var size: Int,
	var node : Array[Vertices],
  var result : Boolean) {
	def this(value: Int) {
		//set value
        this(value,Array.fill[Vertices](value)(null),false);
		//set initial values of graph node
		this.set_data();
	}
	//Set initial node value
	def set_data(): Unit = {
		if (this.node == null) {
			print("\nEmpty Graph");
		} else {
			var index: Int = 0;
			while (index < this.size) {
				this.node(index) = new Vertices(index);
				index += 1;
			}
		}
	}
	//Connect two node
	def add_edge(start: Int, last: Int): Unit = {
		var newEdge: AjlistNode = new AjlistNode(last);

		if (this.node(start).next == null) {
			//Include first adjacency list node of location start 
			this.node(start).next = newEdge;
		} else {
			var temp: AjlistNode = this.node(start).next;

			//Add new node at the last of edge
			while (temp.next != null) {
				temp = temp.next;
			}
			//Add node 
			temp.next = newEdge;
		}
	}
	//Display graph elements
	def print_graph(): Unit = {
		if (this.size > 0 &&
			this.node != null) {
			var index: Int = 0;
			while (index < this.size) {
				print("\nAdjacency list of vertex " + index + " : ");
				var temp: AjlistNode = this.node(index).next;
				while (temp != null) {
					print(" "+this.node(temp.id).data + " ");
					temp = temp.next;
				}
				index += 1;
			}
		}
	}
	def dfs(start: Int, visit: Array[Boolean]): Unit = {
		if (start > this.size ||
			start < 0 ||
			this.node == null) {
			return;
		}
		if (visit(start) == true) {
			return;
		}
		var temp: AjlistNode = this.node(start).next;
		visit(start) = true;
		while (temp != null) {
			dfs(temp.id, visit);
			temp = temp.next;
		}
	}
	//Check path between two nodes
	def path(start: Int, visit: Array[Boolean]): Unit = {
		if (start > this.size ||
			start < 0 ||
			this.node == null) {
			return;
		}
		if (visit(start) == true) {
			return;
		}
		if (this.result == false) {
			visit(start) = true;
			var temp: AjlistNode = this.node(start).next;
			while (temp != null) {
				path(temp.id, visit);
				temp = temp.next;
			}
		}
	}
	def reset_path(visit: Array[Boolean]): Unit = {
		//reset value
		var j: Int = 0;
		while (j < this.size) {
			visit(j) = false;
			j += 1;
		}
	}
	def visited_status(visit: Array[Boolean]): Boolean = {
		//check visited value
		var j: Int = 0;
		while (j < this.size) {
			if (visit(j) == false) {
				return false;
			}
			j += 1;
		}
		return true;
	}
	def connection(): Unit = {
		//Auxiliary space which is used to store information about 
		// node is visit or not
		var visit: Array[Boolean] = Array.fill[Boolean](this.size)(false);
		this.result = true;
		var i: Int = 0;
		while (i < this.size &&
			this.result == true) {
			reset_path(visit);
			this.result = false;
			this.path(i, visit);

			//Check that whether i node are connected to other node

			if (visited_status(visit) == true) {
				this.result = true;
			}
			i += 1;
		}
		if (this.result == true) {
			print("\n Strongly Connected Graph\n");
		} else {
			print("\n Not Strongly Connected Graph\n");
		}
	}
}
object Main {
	def main(args: Array[String]): Unit = {
		var g1: MyGraph = new MyGraph(5);

		//Connected two node with Edges
		g1.add_edge(0, 4);
		g1.add_edge(1, 0);
		g1.add_edge(1, 2);
		g1.add_edge(2, 1);
		g1.add_edge(2, 4);
		g1.add_edge(3, 1);
		g1.add_edge(3, 2);
		g1.add_edge(4, 3);
		print("First Graph");
		g1.print_graph();
		g1.connection();
		var g2: MyGraph = new MyGraph(6);

		//Connected two node with Edges
		g2.add_edge(0, 1);
		g2.add_edge(0, 5);
		g2.add_edge(1, 2);
		g2.add_edge(2, 2);
		g2.add_edge(2, 3);
		g2.add_edge(3, 4);
		g2.add_edge(4, 1);
		g2.add_edge(5, 2);
		g2.add_edge(5, 4);
		print("\nSecond Graph");
		g2.print_graph();
		g2.connection();
	}
}

Output

First Graph
Adjacency list of vertex 0 :  4
Adjacency list of vertex 1 :  0  2
Adjacency list of vertex 2 :  1  4
Adjacency list of vertex 3 :  1  2
Adjacency list of vertex 4 :  3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex 0 :  1  5
Adjacency list of vertex 1 :  2
Adjacency list of vertex 2 :  2  3
Adjacency list of vertex 3 :  4
Adjacency list of vertex 4 :  1
Adjacency list of vertex 5 :  2  4
 Not Strongly Connected Graph
// Swift program
// Check if graph is strongly connected or not
class AjlistNode {
	//Vertices node key
	var id: Int;
	var next: AjlistNode? ;
	init(_ id: Int) {
		//Set value of node key
		self.id = id;
		self.next = nil;
	}
}
class Vertices {
	var data: Int;
	var next: AjlistNode? ;
	init(_ data: Int) {
		self.data = data;
		self.next = nil;
	}
}
class MyGraph {
	//number of Vertices
	var size: Int;
	var node: [Vertices]? = [Vertices]() ;
	var result: Bool;
	init(_ size: Int) {
		self.size = size;
		self.result = false;
		var i = 0;
		while (i<size) {
          self.node!.append(Vertices(i));
          i+=1;
        }
	}

	//Connect two node
	func add_edge(_ start: Int, _ last: Int) {
		let newEdge: AjlistNode? = AjlistNode(last);
		if (self.node![start].next == nil) {
			//Include first adjacency list node of location start 
			self.node![start].next = newEdge;
		} else {
			var temp: AjlistNode? = self.node![start].next;
			//Add new node at the last of edge
			while (temp!.next != nil) {
				temp = temp!.next;
			}
			//Add node 
			temp!.next = newEdge;
		}
	}
	//Display graph elements
	func print_graph() {
		if (self.size > 0 &&
			self.node != nil) {
			var index: Int = 0;
			while (index < self.size) {
				print("\nAdjacency list of vertex ", index ," : ", terminator: "");
				var temp: AjlistNode? = self.node![index].next;
				while (temp != nil) {
					print(self.node![temp!.id].data ," ", terminator: "");
					temp = temp!.next;
				}
				index += 1;
			}
		}
	}
	func dfs(_ start: Int, _ visit: inout[Bool]) {
		if (start > self.size ||
			start < 0 ||
			self.node == nil) {
			return;
		}
		if (visit[start] == true) {
			return;
		}
		var temp: AjlistNode? = self.node![start].next;
		visit[start] = true;
		while (temp != nil) {
			self.dfs(temp!.id, &visit);
			temp = temp!.next;
		}
	}
	//Check path between two nodes
	func path(_ start: Int, _ visit: inout[Bool]) {
		if (start > self.size ||
			start < 0 ||
			self.node == nil) {
			return;
		}
		if (visit[start] == true) {
			return;
		}
		if (self.result == false) {
			visit[start] = true;
			var temp: AjlistNode? = self.node![start].next;
			while (temp != nil) {
				self.path(temp!.id, &visit);
				temp = temp!.next;
			}
		}
	}
	func reset_path(_ visit: inout[Bool]) {
		//reset value
		var j: Int = 0;
		while (j < self.size) {
			visit[j] = false;
			j += 1;
		}
	}
	func visited_status(_ visit: [Bool]) -> Bool {
		//check visited value
		var j: Int = 0;
		while (j < self.size) {
			if (visit[j] == false) {
				return false;
			}
			j += 1;
		}
		return true;
	}
	func connection() {
		//Auxiliary space which is used to store information about 
		// node is visit or not
		var visit: [Bool] = Array(repeating: false, count: self.size);
		self.result = true;
		var i: Int = 0;
		while (i < self.size &&
			self.result == true) {
			self.reset_path(&visit);
			self.result = false;
			self.path(i, &visit);
			//Check that whether i node are connected to other node

			if (self.visited_status(visit) == true) {
				self.result = true;
			}
			i += 1;
		}
		if (self.result == true) {
			print("\n Strongly Connected Graph\n", terminator: "");
		} else {
			print("\n Not Strongly Connected Graph\n", terminator: "");
		}
	}
}
func main() {
	let g1: MyGraph? = MyGraph(5);
	//Connected two node with Edges
	g1!.add_edge(0, 4);
	g1!.add_edge(1, 0);
	g1!.add_edge(1, 2);
	g1!.add_edge(2, 1);
	g1!.add_edge(2, 4);
	g1!.add_edge(3, 1);
	g1!.add_edge(3, 2);
	g1!.add_edge(4, 3);
	print("First Graph", terminator: "");
	g1!.print_graph();
	g1!.connection();
	let g2: MyGraph? = MyGraph(6);
	//Connected two node with Edges
	g2!.add_edge(0, 1);
	g2!.add_edge(0, 5);
	g2!.add_edge(1, 2);
	g2!.add_edge(2, 2);
	g2!.add_edge(2, 3);
	g2!.add_edge(3, 4);
	g2!.add_edge(4, 1);
	g2!.add_edge(5, 2);
	g2!.add_edge(5, 4);
	print("\nSecond Graph", terminator: "");
	g2!.print_graph();
	g2!.connection();
}
main();

Output

First Graph
Adjacency list of vertex  0  : 4
Adjacency list of vertex  1  : 0  2
Adjacency list of vertex  2  : 1  4
Adjacency list of vertex  3  : 1  2
Adjacency list of vertex  4  : 3
 Strongly Connected Graph

Second Graph
Adjacency list of vertex  0  : 1  5
Adjacency list of vertex  1  : 2
Adjacency list of vertex  2  : 2  3
Adjacency list of vertex  3  : 4
Adjacency list of vertex  4  : 1
Adjacency list of vertex  5  : 2  4
 Not Strongly Connected Graph
Last updated on by Kalkicode




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