Added programs of LinkedQueue and Indegree and outdegree of vertices

IndegreeAndOutdegree.cpp

@@ -0,0 +1,37 @@
+# include <iostream>
+using namespace std;
+int main()
+{ int n;
+int a[10][10];
+     cout<<"Enter the order of the Adjancy matrix of graph";
+      cin>>n;
+     cout<<"Enter the Adjancy Matrix"<<endl;
+      for(int i=0; i<n; i++)
+      {
+          for(int j=0; j<n; j++)
+          {
+              cin>>a[i][j];
+          }
+      }
+      int ch='a';
+      int indegree[n]={0};
+      int outdegree[n]={0};
+      for(int i=0; i<n; i++)
+      {
+         for(int j=0; j<n; j++)
+         {
+
+
+                 outdegree[i]+=a[i][j];
+                 indegree[i]+=a[j][i];
+
+         }
+      }
+      cout<<"Vertex "<<" Indegree "<<" Outdegree"<<endl;
+      for(int i=0; i<n; i++)
+      {
+          cout<<"("<<(char)(ch+i)<<")        "<<indegree[i]<<"         "<<outdegree[i]<<endl;
+      }
+      cout<<endl;
+    return 0;
+}

Linked_Queue.cpp

@@ -0,0 +1,155 @@
+# include <iostream>
+using namespace std;
+template <class T>
+class node
+{   public:
+    T info;
+    node<T>* next;
+    node(T x, node* n=NULL)
+    {
+        info=x;
+        next=n;
+    }
+
+};
+template <class T>
+class queuetype
+{
+  node<T>* f,*r;
+  public :
+  queuetype()
+  {
+      f=r=NULL;
+  }
+  int isempty();
+  void enqueue(T x);
+  T dequeue();
+  int count();
+  void display();
+
+
+};
+template <class T>
+int queuetype <T>::isempty()
+{
+    if(f==NULL)
+    {
+        return 1;
+    }
+    else
+    return -1;
+}
+template <class T>
+void queuetype<T> :: enqueue(T x)
+{
+    node<T>* temp;
+    temp=new node<T>(x);
+    if(f==NULL)
+     f=r=temp;
+    else
+    {
+      r->next=temp;
+      r=temp;
+    }
+}
+template <class T>
+T queuetype<T> :: dequeue()
+{
+    int x;
+    x=f->info;
+    if(f==r)
+    {
+        delete f;
+        f=r=NULL;
+    }
+    else
+    {
+      node<T>* temp;
+      temp=f;
+      f=f->next;
+      delete(temp);
+    }
+    return x;
+}
+template <class T>
+int queuetype<T> :: count()
+{
+    int ct=0;
+     node<T>* temp;
+    for(temp=f; temp!=NULL; temp=temp->next)
+        {
+           ct++;
+        }
+        return ct;
+}
+template <class T>
+void queuetype<T> :: display()
+{
+    if(f==NULL)
+    cout<<"Queue is Empty! Nothing to display"<<endl;
+    else
+    {  node<T>* temp;
+        cout<<"Elements of Queue from front end to rare end are : "<<endl;
+        for(temp=f; temp!=NULL; temp=temp->next)
+        {
+           cout<<temp->info<<"  ";
+        }
+        cout<<endl;
+    }
+}
+
+int main()
+{
+    int choice, i , in, del ,ct;
+    char c='y';
+    queuetype<int> q;
+    while(c=='y' || c=='Y')
+    {
+        cout<<"Main menu :- "<<endl;
+        cout<<" 1. Add an element in a Queue "<<endl;
+        cout<<" 2. Remove an element fom Queue"<<endl;
+        cout<<" 3. Check for emptyness "<<endl;
+        cout<<" 4. Display Queue "<<endl;
+        cout<<" 5. Count the no of elements in an Queue"<<endl;
+        cout<<"Enter your choice(1-5) ";
+        cin>>choice;
+        switch(choice)
+        {
+            case 1 : cout<<"Enter the element you want to add ";
+                     cin>>in;
+                     q.enqueue(in);
+                     q.display();
+                     break;
+            case 2 : i=q.isempty();
+                     if(i==1){
+                      cout<<"Queue is empty! Nothing to display."<<endl;
+                     }
+                     else{
+                     del=q.dequeue();
+                     cout<<del<<" has been deleted from the Queue."<<endl;
+                     q.display();
+                     }
+                     break;
+            case 3 : i=q.isempty();
+                     if(i==1){
+                         cout<<"Queue is empty"<<endl;
+                      }
+                      else
+                      {
+                          cout<<"Queue is Nonempty"<<endl;
+                      }
+                      break;
+            case 4 : q.display();
+            case 5 : ct=q.count();
+                     cout<<"No of elements in Queue are "<<ct<<endl;
+                     break;
+            default : cout<<"You entered a wrong choice "<<endl;
+
+
+        }
+        cout<<"Do you want to continue? ";
+        cin>>c;
+
+    }
+
+}