"inserting at start in vector c++" Code Answer's
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inserting at start in vector c++
// Inserting at start
vector_name.insert(vector_name.begin(), element_to_be_inserted);
// Inserting after xth element
vector_name.insert(vector_name.begin()+(x-1), element_to_be_inserted);
// Inserting at last
vector_name.push_back(element_to_be_inserted);
vector insert
// inserting into a vector
#include <iostream>
#include <vector>
int main ()
{
std::vector<int> myvector (3,100);
std::vector<int>::iterator it;
it = myvector.begin();
it = myvector.insert ( it , 200 );
myvector.insert (it,2,300);
// "it" no longer valid, get a new one:
it = myvector.begin();
std::vector<int> anothervector (2,400);
myvector.insert (it+2,anothervector.begin(),anothervector.end());
int myarray [] = { 501,502,503 };
myvector.insert (myvector.begin(), myarray, myarray+3);
std::cout << "myvector contains:";
for (it=myvector.begin(); it<myvector.end(); it++)
std::cout << ' ' << *it;
std::cout << '\n';
return 0;
}
Source: www.cplusplus.com
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