【C++11】vectorをシャッフルするコードのメモ

c11_shuffle_vector.cpp

#include <chrono>
#include <iostream>
#include <random>
#include <vector>

int main()
{
    std::vector<int> vec = {1, 1, 2, 3, 5, 8, 13};


    std::cout << "origin: ";
    for(int v : vec)
        std::cout << v << ", ";
    std::cout << std::endl;


    unsigned int seed = std::chrono::system_clock::now().time_since_epoch().count();
    auto rand_engine = std::default_random_engine(seed);

    std::shuffle(vec.begin(), vec.end(), rand_engine);


    std::cout << "result: ";
    for(int v : vec)
        std::cout << v << ", ";
    std::cout << std::endl;

    return 0;
}