Insert one vector to another vector : vector insert « Vector « C++






  1. C++
  2. Vector
  3. vector insert

Insert one vector to another vector

   
 


#include <iostream>
#include <vector>
using namespace std;

int main()
{
  vector<char> v(10);
  vector<char> v2;
  char str[] = "<Vector>";
  unsigned int i;

  for(i=0; i<10; i++)
     v[i] = i + 'a';

  for(i=0; str[i]; i++)
     v2.push_back(str[i]);

  cout << "Original contents of v:\n";
  for(i=0; i<v.size(); i++)
      cout << v[i] << " ";
  cout << "\n\n";

  vector<char>::iterator p = v.begin();
  p += 2; // point to 3rd element

  v.insert(p, 10, 'X');

  // display contents after insertion
  cout << "Size after inserting X's = " << v.size() << endl;
  cout << "Contents after insert:\n";
  for(i=0; i<v.size(); i++) cout << v[i] << " ";
  cout << "\n\n";


  // Insert v2 into v
  v.insert(p, v2.begin(), v2.end());
  cout << "Size after v2's insertion = ";
  cout << v.size() << endl;
  cout << "Contents after insert:\n";
  for(i=0; i<v.size(); i++) cout << v[i] << " ";
  cout << endl;

  return 0;
}

/* 
Original contents of v:
a b c d e f g h i j

Size after inserting X's = 20
Contents after insert:
a b X X X X X X X X X X c d e f g h i j


 */








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