C++ //常用算术生成算法 //#include<numeric> accumulate //fill //向容器中填充指定的元素

 1 //常用算术生成算法 //#include<numeric> accumulate
 2 //fill //向容器中填充指定的元素
 3 #include<iostream>
 4 #include<vector>
 5 #include<numeric>
 6 #include<algorithm>
 7
 8 using namespace std;
 9
10
11 void test01()
12 {
13     vector<int>v;
14     for (int i = 0; i <= 100; i++)
15     {
16         v.push_back(i);
17     }
18
19     //参数三 其实累加值
20     int total = accumulate(v.begin(), v.end(), 0);
21
22     cout << "total = " <<total<< endl;
23
24 }
25
26 //fill
27 void Myprint(int v)
28 {
29     cout << v << " ";
30 }
31
32
33 void test02()
34 {
35     vector<int>v2;
36     v2.resize(10);
37     for (vector<int>::iterator it = v2.begin(); it != v2.end(); it++)
38     {
39         cout << *it << " ";
40     }
41     cout << endl;
42     //后期重新填充
43     fill(v2.begin(), v2.end(), 99);
44     for_each(v2.begin(), v2.end(), Myprint);
45     cout << endl;
46
47 }
48 int main()
49 {
50
51     test01();
52     test02();
53     system("pause");
54     return 0;
55 }