C++之算术生成算法

accumulate

#include<iostream>
using namespace std;
#include<vector>
#include<numeric>void test()
{vector<int> v;for (int i = 0; i < 10; i++){v.push_back(i);}int total = accumulate(v.begin(), v.end(),0);cout << total << endl;
}int main()
{test();system("pause");return 0;
}

fill

#include<iostream>
using namespace std;
#include<vector>
#include<numeric>
#include<algorithm>class MyPrint
{
public:void operator()(int val){cout << val<<" ";}
};void test()
{vector<int> v;v.resize(10);cout << "默认值" << endl;for_each(v.begin(), v.end(), MyPrint());cout << endl;fill(v.begin(), v.end(), 100);cout << "从新填充" << endl;for_each(v.begin(), v.end(), MyPrint());cout << endl;
}int main()
{test();system("pause");return 0;
}