#include <iostream>
#include <vector>
using namespace std;
template <typename T>
struct LessThan : binary_function<T, T, T> {
T operator()(const T& x, const T& y) {
return x < y ? true : false;
}
};
template <typename T>
struct GreaterThan : binary_function<T, T, T> {
T operator()(const T& x, const T& y) {
return x > y ? true : false;
}
};
template <typename iterType, typename elemType, typename binaryOperation>
void fliter(iterType beg, iterType end, elemType fliter_value, vector<elemType> &v, binaryOperation binary_op) {
while (beg != end) {
if (binary_op(*beg, fliter_value)){
v.push_back(*beg);
}
++beg;
}
}
template <typename iterT>
void display(iterT beg, iterT end) {
while(beg != end) {
cout << *beg++ << " ";
}
cout << endl;
}
int main() {
float fa[6] = {6.3, 21.1, 13.4, 9.7, 18, 1.1};
vector<int> iv = {12, 8, 3, 20, 4, 17};
vector<float> frv;
fliter(fa, fa + 6, (float)11, frv, LessThan<float>());
cout << "fa[6] : " << endl;
display(fa, fa + 6);
cout << "Numbers less than 11 : " << endl;
display(frv.begin(), frv.end());
// for(auto it = frv.begin(); it != frv.end(); ++it) {
// cout << *it << " ";
// }
// cout << endl;
vector<int> irv;
fliter(iv.begin(), iv.end(), 7, irv, GreaterThan<int>());
cout << "vector iv : " << endl;
display(iv.begin(), iv.end());
cout << "Numbers greater than 7 : " << endl;
display(irv.begin(), irv.end());
return 0;
}
2018-10-15
网友评论