code: создание histogram.h и histogram.cpp
Этот коммит содержится в:
@@ -32,6 +32,7 @@
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<Add option="-Wall" />
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<Add option="-fexceptions" />
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</Compiler>
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<Unit filename="histogram.cpp" />
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<Unit filename="main.cpp" />
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<Extensions />
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</Project>
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45
histogram.cpp
Обычный файл
45
histogram.cpp
Обычный файл
@@ -0,0 +1,45 @@
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#include "histogram.h"
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#include <vector>
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static void find_minmax(const std::vector <double> &numbers, double &min, double &max)
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{
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min = numbers[0];
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max = numbers[0];
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for (double x : numbers)
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{
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if (x < min)
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{
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min = x;
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}
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else if (x > max)
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{
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max = x;
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}
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}
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}
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std::vector<std::size_t> make_histogram(const std::vector<double> &numbers, std::size_t bin_count)
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{
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double min, max;
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find_minmax(numbers, min, max);
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double bin_size = (max - min) / bin_count;
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std::vector <std::size_t> bins (bin_count);
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for (std::size_t i = 0; i < numbers.size(); i++)
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{
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bool found = false;
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for (std::size_t j = 0; (j < bin_count - 1) && !found; j++)
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{
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auto lo = min + j * bin_size;
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auto hi = min + (j+1) * bin_size;
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if ((lo <= numbers[i]) && (numbers[i] < hi))
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{
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bins[j]++;
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found = true;
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}
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}
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if (!found)
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{
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bins[bin_count - 1]++;
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}
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}
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return bins;
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}
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9
histogram.h
Обычный файл
9
histogram.h
Обычный файл
@@ -0,0 +1,9 @@
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#ifndef HISTOGRAM_H_INCLUDED
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#define HISTOGRAM_H_INCLUDED
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#include <vector>
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std::vector<size_t>
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make_histogram(const std::vector<double>& numbers, size_t bin_count);
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#endif // HISTOGRAM_H_INCLUDED
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49
main.cpp
49
main.cpp
@@ -1,6 +1,6 @@
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#include <iostream>
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#include <vector>
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#include "histogram.h"
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using namespace std;
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struct Input
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{
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@@ -26,51 +26,6 @@ input_data()
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return in;
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}
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void
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find_minmax(const vector<double> &numbers, double &min, double &max)
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{
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min = numbers[0];
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max = numbers[0];
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for (double x : numbers)
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{
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if (x < min)
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{
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min = x;
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}
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else if (x > max)
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{
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max = x;
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}
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}
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}
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vector<size_t> make_histogram(const vector<double> &numbers, size_t bin_count)
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{
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double min = numbers[0];
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double max = numbers[0];
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find_minmax(numbers, min, max);
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double bin_size = (max - min) / bin_count;
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vector <size_t> bins (bin_count);
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for (size_t i = 0; i < numbers.size(); i++)
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{
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bool found = false;
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for (size_t j = 0; (j < bin_count - 1) && !found; j++)
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{
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auto lo = min + j * bin_size;
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auto hi = min + (j+1) * bin_size;
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if ((lo <= numbers[i]) && (numbers[i] < hi))
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{
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bins[j]++;
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found = true;
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}
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}
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if (!found)
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{
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bins[bin_count - 1]++;
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}
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}
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return bins;
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}
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void
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show_histogram_text(const vector <size_t> &bins)
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{
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const size_t SCREEN_WIDTH = 80;
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@@ -130,7 +85,7 @@ show_histogram_text(const vector <size_t> &bins)
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int
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main()
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{
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auto in = input_data();
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Input in = input_data();
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auto bins = make_histogram(in.numbers, in.bin_count);
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show_histogram_text(bins);
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}
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