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Median.cpp
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Median.cpp
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//---------------------------------------------------------------------------
#include <vcl.h>
#include <math.h>
#pragma hdrstop
#include "Median.h"
//---------------------------------------------------------------------------
#pragma package(smart_init)
__fastcall Median::Median()
{
m_bAverage = false;
m_dAverageFactor = 0.65;
}
__fastcall Median::~Median()
{
//TODO: Add your source code here
}
void __fastcall Median::Sort(double * arr, int n)
{
int i, j;
double tmp;
for(i = 1; i < n; ++i) // öèêë ïðîõîäîâ, i - íîìåð ïðîõîäà
{
tmp = arr[i];
for (j = i - 1; j >= 0 && arr[j] > tmp; --j) // ïîèñê ìåñòà ýëåìåíòà â ãîòîâîé ïîñëåäîâàòåëüíîñòè
arr[j + 1] = arr[j]; // ñäâèãàåì ýëåìåíò íàïðàâî, ïîêà íå äîøëè
arr[j + 1] = tmp; // ìåñòî íàéäåíî, âñòàâèòü ýëåìåíò
}
}
void __fastcall Median::SetAverage(bool value)
{
if(m_bAverage != value) m_bAverage = value;
}
bool __fastcall Median::GetAverage()
{
return m_bAverage;
}
void __fastcall Median::SetAverageFactor(double value)
{
if(m_dAverageFactor != value) m_dAverageFactor = value;
}
double __fastcall Median::GetAverageFactor()
{
return m_dAverageFactor;
}
double __fastcall Median::GetMedian(double * arr, int n)
{
double *sort_arr = new double[n];
double dMedian;
int nMedIndex = n / 2;
bool isEven = ((n % 2) == 0);
for(int i = 0; i < n; i++) sort_arr[i] = arr[i];
Sort(sort_arr, n);
if(m_bAverage)
dMedian = m_dAverageFactor * sort_arr[nMedIndex] +
(1.0 - m_dAverageFactor) * (sort_arr[nMedIndex - 1] + sort_arr[nMedIndex + 1]) / 2.0;
else
{
if(isEven) dMedian = (sort_arr[nMedIndex - 1] + sort_arr[nMedIndex]) / 2.0;
else dMedian = sort_arr[nMedIndex];
}
delete [] sort_arr;
return dMedian;
}