how to append one vector to another c++
vector<int> a;
vector<int> b;
// Appending the integers of b to the end of a
a.insert(a.end(), b.begin(), b.end());how to append one vector to another c++
vector<int> a;
vector<int> b;
// Appending the integers of b to the end of a
a.insert(a.end(), b.begin(), b.end());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// "it" no longer valid, get a new one: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;
}insert vector
#include <iostream>
#include <vector>
void print_vec(const std::vector<int>& vec)
{
for (auto x: vec) {
std::cout << ' ' << x;
}
std::cout << '\n';
}
int main ()
{
std::vector<int> vec(3,100);
print_vec(vec);
auto it = vec.begin();
it = vec.insert(it, 200);
print_vec(vec);
vec.insert(it,2,300);
print_vec(vec);
// "it" no longer valid, get a new one:
it = vec.begin();
std::vector<int> vec2(2,400);
vec.insert(it+2, vec2.begin(), vec2.end());
print_vec(vec);
int arr[] = { 501,502,503 };
vec.insert(vec.begin(), arr, arr+3);
print_vec(vec);
}Copyright © 2021 Codeinu
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