#include "histogram.h" #include <vector> #include <iostream> using namespace std; bool find_minmax(const vector<double>& numbers, double& min, double& max) { if (numbers.empty()) { return false; } min = numbers[0]; max = numbers[0]; for (double x : numbers) { if (x < min) { min = x; } else if (x > max) { max = x; } } return true; } std::vector<double> make_histogram(const std::vector<double>& numbers, size_t bin_count) { vector<double> bins(bin_count); double min = 0, max = 0; find_minmax(numbers, min, max); double bin_size = (max - min) / bin_count; for (int i = 0; i < numbers.size(); i++) { bool found = false; for (int j = 0; (j < bin_count - 1) && !found; j++) { auto lo = min + j * bin_size; auto hi = min + (j + 1) * bin_size; if ((lo <= numbers[i]) && (numbers[i] < hi)) { bins[j]++; found = true; } } if (!found) { bins[bin_count - 1]++; } } return bins; }