Test efficiency

oster_man

Jun 11th, 2023

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#include "log_duration.h"
#include <iostream>
#include <numeric>
#include <algorithm>
#include <random>
#include <string>
#include <vector>
using namespace std;
vector<float> ComputeAvgTempVar(const vector<vector<float>>& measures) {
if (measures.empty()){
vector<float> result;
return result;
}
else{
vector<float> result(measures[0].size());
auto iter=measures.begin();
auto days=measures.size();
while(iter!=measures.end()){
transform(result.begin(),result.end(),iter->begin(),result.begin(),plus<float>{});
++iter;
}
for (auto& it:result){
it<0.f?it=0.f:it/=days;
}
return result;
}
}
vector<float> ComputeAvgTempFunc(const vector<vector<float>>& measures) {
if (measures.empty()){
vector<float> result;
return result;
}
else{
vector<float> result(measures[0].size());
auto iter=measures.begin();
while(iter!=measures.end()){
transform(result.begin(),result.end(),iter->begin(),result.begin(),plus<float>{});
++iter;
}
for (auto& it:result){
it<0.f?it=0.f:it/=measures.size();
}
return result;
}
}
vector<float> GetRandomVector(int size) {
static mt19937 engine;
uniform_real_distribution<float> d(-100, 100);
vector<float> res(size);
for (int i = 0; i < size; ++i) {
res[i] = d(engine);
}
return res;
}
int main() {
vector<vector<float>> data;
data.reserve(5000);
for (int i = 0; i < 5000; ++i) {
data.push_back(GetRandomVector(5000));
}
vector<float> avg;
for (int i=1;i<2;++i)
{
LOG_DURATION("ComputeAvgTemp (by var)"s);
avg = ComputeAvgTempVar(data);
}
for (int i=1;i<2;++i)
{
LOG_DURATION("ComputeAvgTemp (by func)"s);
avg = ComputeAvgTempFunc(data);
}
cout << "Total mean: "s << accumulate(avg.begin(), avg.end(), 0.f) / avg.size() << endl;
}

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