एसटीएल में वेक्टर लागू करने के लिए सी++ प्रोग्राम

जब कोई तत्व डाला या हटाया जाता है तो वेक्टर स्वचालित रूप से गतिशील सरणी की तरह आकार बदलने की क्षमता रखते हैं, कंटेनर स्वचालित रूप से अपने भंडारण को संभालता है। वेक्टर तत्वों को सन्निहित भंडारण में रखा जाता है ताकि उन्हें इटरेटर्स का उपयोग करके एक्सेस और ट्रैवर्स किया जा सके। डेटा को वेक्टर के आरंभ, मध्य या अंत में डाला या मिटाया जा सकता है।

कार्य और विवरण:

List of functions used here:
   v.size() = Returns the size of vector.
   v.push_back() = It is used to insert elements to the vector from end.
   v.pop_back() = To pop out the value from the vector from back.
   v.capacity() = Returns the size of the storage space currently allocated to the vector as number of elements.
   v.clear() = Clears the vector.

उदाहरण कोड

#include <iostream>
#include <vector>
using namespace std;
int main() {
   vector<int> v;
   vector<int>::iterator it;
   int c, i;
   while (1) {
      cout<<"1.Size of the Vector"<<endl;
      cout<<"2.Insert Element into the Vector"<<endl;
      cout<<"3.Delete Last Element of the Vector"<<endl;
      cout<<"4.Display the capacity of vector"<<endl;
      cout<<"5.Display by Iterator"<<endl;
      cout<<"6.Clear the Vector"<<endl;
      cout<<"7.Exit"<<endl;
      cout<<"Enter your Choice: ";
      cin>>c;
      switch(c) {
         case 1:
            cout<<"Size of Vector: ";
            cout<<v.size()<<endl;
         break;
         case 2:
            cout<<"Enter value to be inserted: ";
            cin>>i;
            v.push_back(i);
         break;
         case 3:
            cout<<"Delete Last Element Inserted:"<<endl;
            v.pop_back();
         break;
         case 4:
            cout<<"Displaying capacity of vector: ";
            cout<<v.capacity()<<endl;
         break;
         case 5:
            cout<<"Displaying Vector by Iterator: ";
            for (it = v.begin(); it != v.end(); it++) {
               cout<<*it<<" ";
            }
            cout<<endl;
         break;
         case 6:
            v.clear();
            cout<<"Vector Cleared"<<endl;
         break;
         case 7:
            exit(1);
         break;
         default:
            cout<<"Wrong Choice"<<endl;
      }
   }
   return 0;
}

आउटपुट

1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 1
Size of Vector: 0
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 2
Enter value to be inserted: 7
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 2
Enter value to be inserted: 6
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 2
Enter value to be inserted: 4
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 2
Enter value to be inserted: 3
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 2
Enter value to be inserted: 5
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 4
Displaying capacity of vector: 8
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 5
Displaying Vector by Iterator: 7 6 4 3 5
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 3
Delete Last Element Inserted:
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 5
Displaying Vector by Iterator: 7 6 4 3
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 6
Vector Cleared
1.Size of the Vector
2.Insert Element into the Vector
3.Delete Last Element of the Vector
4.Display the capacity of vector
5.Display by Iterator
6.Clear the Vector
7.Exit
Enter your Choice: 7
Exit.