RosettaCodeData/Task/Equilibrium-index/C++/equilibrium-index.cpp

41 lines
845 B
C++

#include <algorithm>
#include <iostream>
#include <numeric>
#include <vector>
template <typename T>
std::vector<size_t> equilibrium(T first, T last)
{
typedef typename std::iterator_traits<T>::value_type value_t;
value_t left = 0;
value_t right = std::accumulate(first, last, value_t(0));
std::vector<size_t> result;
for (size_t index = 0; first != last; ++first, ++index)
{
right -= *first;
if (left == right)
{
result.push_back(index);
}
left += *first;
}
return result;
}
template <typename T>
void print(const T& value)
{
std::cout << value << "\n";
}
int main()
{
const int data[] = { -7, 1, 5, 2, -4, 3, 0 };
std::vector<size_t> indices(equilibrium(data, data + 7));
std::for_each(indices.begin(), indices.end(), print<size_t>);
}