How do I use std::vector in C++ for advanced data manipulation?

How do I use std::vector in C++ for advanced data manipulation?

You can use std::vector for advanced data manipulation by utilizing its methods like insert, erase, and resize. What specific manipulation are you looking to perform?

I want to insert elements at specific positions and remove duplicates.

To insert elements at specific positions, you can use the insert() method. For removing duplicates, you might want to sort the vector first and then use the unique() algorithm. Would you like a code example?

Yes, please provide a code example for both.

Sure! Here's a code snippet:

#include <iostream>
#include <vector>
#include <algorithm>

int main() {
    std::vector<int> vec = {1, 2, 3, 4, 5};
    vec.insert(vec.begin() + 2, 10); // Insert 10 at index 2
    std::sort(vec.begin(), vec.end());
    auto last = std::unique(vec.begin(), vec.end());
    vec.erase(last, vec.end()); // Remove duplicates
    
    for (int n : vec) std::cout << n << ' ';
    return 0;
}

This will insert 10 and remove duplicates if any.

Thanks! How can I resize a vector dynamically?

You can resize a vector using the resize() method. For example, vec.resize(new_size); will change the size of the vector to new_size, filling new elements with default values. Do you need more details on this?