Using insert iterator adapters to insert one deque into another via the copy() algorithm. - C++ STL Algorithm

C++ examples for STL Algorithm:copy

  1. HOME
  2. C++
  3. STL Algorithm
  4. copy

Description

Using insert iterator adapters to insert one deque into another via the copy() algorithm.

Demo Code

#include <iostream>
#include <iterator>
#include <deque>
#include <string>
using namespace std;
void show(const char *msg, deque<string> dq);
int main()//  ww  w  . j  a  v  a2 s  .  com
{
   deque<string> dq, dq2, dq3, dq4;
   dq.push_back("Iterators");
   dq.push_back("are");
   dq.push_back("the");
   dq.push_back("the");
   dq.push_back("are");
   dq.push_back("STL");
   dq.push_back("together.");
   dq2.push_back("glue");
   dq2.push_back("that");
   dq2.push_back("holds");
   dq3.push_back("At");
   dq3.push_back("At");
   dq3.push_back("At");
   dq3.push_back("the");
   dq3.push_back("end.");
   dq4.push_back("front.");
   dq4.push_back("the");
   dq4.push_back("front.");
   dq4.push_back("front.");
   dq4.push_back("At");
   dq4.push_back("front.");

   cout << "Original size of dq: " << dq.size() << endl;
   show("Original contents of dq:\n", dq);
   cout << endl;
   // Use an insert_iterator to insert dq2 into dq.
   copy(dq2.begin(), dq2.end(), inserter(dq, dq.begin()+3));
   cout << "Size of dq after inserting dq2: ";
   cout << dq.size() << endl;
   show("Contents of dq after inserting dq2:\n", dq);
   cout << endl;
   // Use a back_insert_iterator to insert dq3 into dq.
   copy(dq3.begin(), dq3.end(), back_inserter(dq));
   cout << "Size of dq after inserting dq3: ";
   cout << dq.size() << endl;
   show("Contents of dq after inserting dq3:\n", dq);
   cout << endl;
   // Use a front_insert_iterator to insert dq4 into dq.
   copy(dq4.begin(), dq4.end(), front_inserter(dq));
   cout << "Size of dq after inserting dq4: ";
   cout << dq.size() << endl;
   show("Contents of dq after inserting dq4:\n", dq);
   return 0;
}
// Display the contents of a deque<string>.
void show(const char *msg, deque<string> dq) {
   cout << msg;
   for(unsigned i=0; i < dq.size(); ++i)
      cout << dq[i] << " ";
   cout << "\n";
}

Result


Related Tutorials