Vectors insert: The below code is an example of a vector insert function. It may help the beginners.

#include <iostream>

#include <vector>

int main()

{

std::vector<int> v = {1, 2, 4, 5};

// Insert a single element at position 2

v.insert(v.begin() + 2, 3);

// v = {1, 2, 3, 4, 5}

// Insert multiple copies of a value

v.insert(v.begin() + 1, 3, 9);

// Inserts three 9s at index 1

// v = {1, 9, 9, 9, 2, 3, 4, 5}

// Insert a range of elements from another vector

std::vector<int> other = {7, 8};

v.insert(v.end(), other.begin(), other.end());

// Appends 7 and 8

// v = {1, 9, 9, 9, 2, 3, 4, 5, 7, 8}

// Insert using an initializer list at the beginning

v.insert(v.begin(), {10, 11}); // Inserts 10 and 11 at the start

// v = {10, 11, 1, 9, 9, 9, 2, 3, 4, 5, 7, 8}

// Print the final result

std::cout << "Vector contents: ";

for (int val : v)

{

std::cout << val << " ";

}

std::cout << std::endl;

return 0;

}