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Jakob Schratter 2025-10-22 15:16:25 +02:00
commit 6be81d2d73
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35
ex1A_mean_values/main.cpp Normal file
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#include "means.h"
#include <vector>
#include <iostream>
using namespace std;
int main(int argc, char **argv)
{
double arithmetic_mean, geometric_mean, harmonic_mean;
// Fixed version
calculate_means(1, 4, 16, arithmetic_mean, geometric_mean, harmonic_mean);
cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
calculate_means(2, 3, 5, arithmetic_mean, geometric_mean, harmonic_mean);
cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
calculate_means(1000, 4000, 16000, arithmetic_mean, geometric_mean, harmonic_mean);
cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
cout << "--------------------------------" << endl;
// Scalable version
calculate_means(vector<int> {1, 4, 16}, arithmetic_mean, geometric_mean, harmonic_mean);
cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
calculate_means(vector<int> {2, 3, 5}, arithmetic_mean, geometric_mean, harmonic_mean);
cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
calculate_means(vector<int> {1000, 4000, 16000}, arithmetic_mean, geometric_mean, harmonic_mean);
cout << arithmetic_mean << ", " << geometric_mean << ", " << harmonic_mean << endl;
return 0;
}

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ex1A_mean_values/means.cpp Normal file
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#include "../ex1A_mean_values/means.h"
#include <cmath>
#include <vector>
void calculate_means(int a, int b, int c, double &am, double &gm, double &hm)
{
am = (a + b + c)/3.0;
gm = exp((log(a)+log(b)+log(c))/3);
hm = 3.0/(1.0/a + 1.0/b + 1.0/c);
}
void calculate_means(std::vector<int> numbers, double &am, double &gm, double &hm)
{
int n = numbers.size();
am = 0.;
gm = 0.;
hm = 0.;
for (int i = 0; i < n; ++i)
{
am += numbers[i];
gm += log(numbers[i]);
hm += 1.0/numbers[i];
}
am /= n;
gm = exp(gm/n);
hm = n/hm;
}

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ex1A_mean_values/means.h Normal file
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#pragma once
#include <vector>
/**
This function calculates arithmetic mean, geometric mean and harmonic mean of three integers.
@param[in] a first integer
@param[in] b second integer
@param[in] c third integer
@param[out] am arithmetic mean
@param[out] gm geometric mean
@param[out] hm harmonic mean
*/
void calculate_means(int a, int b, int c, double &am, double &gm, double &hm);
/**
This function calculates arithmetic mean, geometric mean and harmonic mean of an integer vector.
@param[in] numbers vector containing integers
@param[out] am arithmetic mean
@param[out] gm geometric mean
@param[out] hm harmonic mean
*/
void calculate_means(std::vector<int> numbers, double &am, double &gm, double &hm);