Mega Code Archive
Inner product of a vector and another vector
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#include <vector>
#include <iostream>
#include <numeric>
using namespace std;
template <class T>
void print(T& c){
for( typename T::iterator i = c.begin(); i != c.end(); i++ ){
std::cout << *i << endl;
}
}
int main() {
vector<double> vec1(4, 2.0); // Length 4, all values == 2.0
vector<double> vec2(4, 4.0); // Length 4, all values == 4.0
double init = 0.0;
double summation = accumulate (vec1.begin(), vec1.end(), init);
cout << "Sum of elements in vector 1: " << summation << endl;
double ip = inner_product(vec1.begin(), vec1.end(), vec2.begin(), init);
cout << "Inner product of vec1 and vec2: " << ip << endl;
int size = 6;
int seed_value = 2;
vector<int> vec3(size, seed_value);
vector<int> result(size);
partial_sum(vec3.begin(), vec3.end(), result.begin());
print(result);
int sz = 10;
int value = 2;
vector<int> vec4(sz);
vector<int>::iterator it;
for (it = vec4.begin(); it != vec4.end(); it++)
{
(*it) = value;
value += 1;
}
vector<int> result2(vec4.size());
adjacent_difference(vec4.begin(), vec4.end(), result2.begin());
cout << "The adjacent difference of the vector vec4\n";
print(result2);
return 0;
}
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