代码如下:
#include <iostream> #include <vector> #include <numeric> #include <algorithm> using namespace std; class myPrint { public: void operator()(int val) { cout << val << " "; } }; void test01() { vector<int>v1; vector<int>v2; for (int i = 0; i < 10; i++) { v1.push_back(i); v2.push_back(i + 5); } for_each(v1.begin(), v1.end(), myPrint()); cout << endl; for_each(v2.begin(), v2.end(), myPrint()); cout << endl; vector<int >v3; v3.resize(min(v1.size(),v2.size())); vector<int>::iterator itEnd = set_intersection(v1.begin(), v1.end(), v2.begin(), v2.end(), v3.begin()); for_each(v3.begin(), itEnd, myPrint()); cout << endl; } int main() { test01(); return 0; }
测试结果:
总结:
代码如下:
#include <iostream> #include <vector> #include <numeric> #include <algorithm> using namespace std; class myPrint { public: void operator()(int val) { cout << val << " "; } }; void test01() { vector<int>v1; vector<int>v2; for (int i = 0; i < 10; i++) { v1.push_back(i); v2.push_back(i + 5); } for_each(v1.begin(), v1.end(), myPrint()); cout << endl; for_each(v2.begin(), v2.end(), myPrint()); cout << endl; vector<int >v3; v3.resize(v1.size() + v2.size()); vector<int>::iterator itEnd = set_union(v1.begin(), v1.end(), v2.begin(), v2.end(), v3.begin()); for_each(v3.begin(), itEnd, myPrint()); cout << endl; } int main() { test01(); return 0; }
测试结果:
总结:
代码如下:
#include <iostream> #include <vector> #include <numeric> #include <algorithm> using namespace std; class myPrint { public: void operator()(int val) { cout << val << " "; } }; void test01() { vector<int>v1; vector<int>v2; for (int i = 0; i < 10; i++) { v1.push_back(i); v2.push_back(i + 5); } for_each(v1.begin(), v1.end(), myPrint()); cout << endl; for_each(v2.begin(), v2.end(), myPrint()); cout << endl; vector<int >v3; v3.resize(max(v1.size() , v2.size())); //v1和v2的差集 vector<int>::iterator itEnd = set_difference(v1.begin(), v1.end(), v2.begin(), v2.end(), v3.begin()); for_each(v3.begin(), itEnd, myPrint()); cout << endl; cout << "---------------------------------------" << endl; //v2和v1的差集 vector<int>::iterator itEnd02 = set_difference(v2.begin(), v2.end(), v1.begin(), v1.end(), v3.begin()); for_each(v3.begin(), itEnd02, myPrint()); cout << endl; } int main() { test01(); return 0; }
测试结果:
总结: