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				| @ -0,0 +1,43 @@ | ||||
| #include <vector> | ||||
| #include "histogram.h" | ||||
| 
 | ||||
| using namespace std; | ||||
| 
 | ||||
| void find_minmax(const vector<double> &numbers, double &min, double &max){ | ||||
|     min = numbers[0]; | ||||
|     max = numbers[0]; | ||||
|     for (double x : numbers) { | ||||
|         if (x < min) { | ||||
|             min = x; | ||||
|         } | ||||
|         else if (x > max) { | ||||
|             max = x; | ||||
|         } | ||||
|     } | ||||
| } | ||||
| 
 | ||||
| vector<size_t> make_histogram(const vector<double> &numbers, size_t bin_count){ | ||||
|     vector<size_t> bins ( bin_count ); | ||||
|     double min = numbers[0]; | ||||
|     double max = numbers[0]; | ||||
| 
 | ||||
|     find_minmax(numbers, min, max); | ||||
| 
 | ||||
|     double bin_size = (max - min) / bin_count; | ||||
| 
 | ||||
|     for (size_t i = 0; i < numbers.size(); i++) { | ||||
|         bool found = false; | ||||
|         for (size_t 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; | ||||
| } | ||||
| @ -0,0 +1,9 @@ | ||||
| #ifndef HISTOGRAM_H_INCLUDED | ||||
| #define HISTOGRAM_H_INCLUDED | ||||
| 
 | ||||
| #include <vector> | ||||
| 
 | ||||
| std::vector<size_t> | ||||
| make_histogram(const std::vector<double>& numbers, size_t bin_count); | ||||
| 
 | ||||
| #endif // HISTOGRAM_H_INCLUDED
 | ||||
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