### Sample Function Usage in Programming The `sample` function or method is commonly used across different programming languages to randomly select items from a collection such as lists, arrays, or DataFrames. Below is an explanation of its usage in both **C++** and **Python**, with emphasis on the libraries mentioned. #### In C++ Although there isn't a direct built-in `sample` function in standard C++, one could achieve similar functionality by combining control structures like loops and conditional statements along with random number generation techniques[^1]. For example: ```cpp #include <iostream> #include <vector> #include <algorithm> // std::shuffle #include <random> std::vector<int> getRandomSample(const std::vector<int>& inputVector, int k) { std::vector<int> result(inputVector); std::mt19937 generator(std::random_device{}()); std::shuffle(result.begin(), result.end(), generator); result.resize(k); return result; } int main() { std::vector<int> numbers = {10, 20, 30, 40, 50}; auto sampledNumbers = getRandomSample(numbers, 3); for(auto num : sampledNumbers){ std::cout << num << " "; } } ``` This code snippet demonstrates how to use shuffling algorithms combined with vector resizing to simulate sampling behavior in C++. The randomness comes from generating pseudo-random values through `<random>` library features. #### I