RosettaCodeData/Task/Factors-of-an-integer/C++/factors-of-an-integer.cpp
2023-07-01 13:44:08 -04:00

34 lines
923 B
C++

#include <iostream>
#include <iomanip>
#include <vector>
#include <algorithm>
#include <iterator>
std::vector<int> GenerateFactors(int n) {
std::vector<int> factors = { 1, n };
for (int i = 2; i * i <= n; ++i) {
if (n % i == 0) {
factors.push_back(i);
if (i * i != n)
factors.push_back(n / i);
}
}
std::sort(factors.begin(), factors.end());
return factors;
}
int main() {
const int SampleNumbers[] = { 3135, 45, 60, 81 };
for (size_t i = 0; i < sizeof(SampleNumbers) / sizeof(int); ++i) {
std::vector<int> factors = GenerateFactors(SampleNumbers[i]);
std::cout << "Factors of ";
std::cout.width(4);
std::cout << SampleNumbers[i] << " are: ";
std::copy(factors.begin(), factors.end(), std::ostream_iterator<int>(std::cout, " "));
std::cout << std::endl;
}
return EXIT_SUCCESS;
}