「学习笔记」C++与C++11的语法技巧

版权声明：本文为hzy原创文章，未经博主允许不可随意转载。 https://blog.csdn.net/Binary_Heap/article/details/82925352

随机打乱序列与生成随机数。

#include <algorithm> //random_shuffle
#include <cstdio>
#include <random>
using namespace std;

int main() {
	int a[] = {0, 1, 2, 3, 4, 5}, n = 5;
	srand(1e7 + 7); random_shuffle(a + 1, a + n + 1);
	for(int i = 1; i <= n; i ++)
		printf("%d%c", a[i], " \n"[i == n]);
	
	//C++11 :
	default_random_engine e; e.seed(2333);
	//default_random_engine e(2333);
	for(int i = 0; i < 10; i ++)
		printf("%d\n", e());
		
	uniform_real_distribution<> f(0, 1);
	//uniform_real_distribution<double> f(0, 1);
	for(int i = 0; i < 10; i ++)
		printf("%f\n", f(e));
	return 0;
}