#include<iostream> #include<vector> #include<random> #include<algorithm> int main() { std::vector<int> v = {1, 2, 3, 4, 5}; // 创建一个随机数生成器 std::random_device rd; std::mt19937 g(rd()); // 使用自定义随机数生成器对向量进行随机排序 std::shuffle(v.begin(), v.end(...
这样可以提高性能,因为随机数生成器可以更有效地生成随机数。 #include<random> #include<algorithm> int main() { std::vector<int> v = {1, 2, 3, 4, 5}; std::random_device rd; std::mt19937 g(rd()); std::shuffle(v.begin(), v.end(), g); } 复制代码 使用Fisher-Yates 洗牌算法:F...
} random_device rd; mt19937_64 mt(rd()); template<typename T>T getRandom(T min,T max) { uniform_int_distribution<T>uid(min,max);returnuid(mt); } template<typename T>voidswap(T *left,T *right) { T temp=*left;*left=*right;*right=temp; } template<typename T> int partitionAsc...
size_t size) {std::vector<int> vec(data.begin(), data.end());std::random_device rd;std::mt19937 g(rd());std::shuffle(vec.begin(), vec.end(), g);return std::set<int>(vec.begin(), vec.begin() + size);}
std::random_device rd; std::mt19937 g(rd()); std::shuffle(v.begin(), v.end(), g); n4190删除auto_ptr、random_shuffle() 和旧的东西 … 三、什么必须死 D.12 “随机洗牌” [depr.alg.random.shuffle] 这定义了 random_shuffle(first, last) 和 random_shuffle(first, last, rng)。 (后...
=20000;++n)++hist[dist(rd)];// note: demo only: the performance of many// implementations of random_device degrades sharply// once the entropy pool is exhausted. For practical use// random_device is generally only used to seed// a PRNG such as mt19937for(auto[x, y]:hist)std::...
#include <algorithm>#include <iostream>#include <iterator>#include <random>#include <vector>intmain(){std::vector<int>v{1,2,3,4,5,6,7,8,9,10};std::random_devicerd;std::mt19937g(rd());std::shuffle(v.begin(), v.end(), g);std::copy(v.begin(), v.end(),std::ostream_ite...
std::random_device rd; std::mt19937_64 mt(rd()); std::uniform_int_distribution<T>uid(min, max);returnuid(mt); } template<typename T>voidprint_t_array(T *arr,constint&len) {for(inti =0; i < len; i++) { std::cout<< i <<","<< arr[i] <<"\t"; ...
{1, 2, 3, 4, 5, 6, 7, 8, 9, 10};// 使用自定义的随机数生成器进行打乱std::random_device rd;std::mt19937 g(rd()); // 使用 Mersenne Twister 随机数引擎std::shuffle(numbers.begin(), numbers.end(), g);// 输出打乱后的结果std::cout << "Custom shuffle: ";for (const auto&...
#include <random> #include <algorithm> #include <iterator> #include <iostream> int main() { std::vector<int> v = {1, 2, 3, 4, 5, 6, 7, 8, 9, 10}; std::random_device rd; std::mt19937 g(rd()); std::shuffle(v.begin(), v.end(), g); std::copy(v.begin(), v.en...