#include "StdAfx.h"
#include "Median.h"
#include <vector>
#include <algorithm>


Median::Median() {

}

Median::~Median() {

}

double Median::getValue(int, vector<double>, vector<double>){
	return 0;
}
double Median::getValue(vector<double>, vector<double>){
	return 0;
}


double Median::getValue(vector<double> ts){

	double median;

	int size = ts.size();
	sort(ts.begin(), ts.end());

	if (size % 2 == 0)
	{
		median = (ts[size % 2 - 1] + ts[size % 2 + 1]) / 2;
	}
	else
	{
		median = ts[size / 2];
	}

	return median;
}

vector<double> Median::getValue(vector<double> ts, int period){

	int size = ts.size();
	int amtPeriod = size / period;
	int shift = size - amtPeriod * period;

	vector <double> median(amtPeriod);
	vector <double> temp(period);

	int begin;
	int end;

	for (int i = 0; i < amtPeriod; i++)
	{
		begin = shift + i * period;
		end = begin + period;

		std::copy(ts.begin() + begin, ts.begin() + end, temp.begin());

		median[i] = getValue(temp);
	}

	return median;
}