QuickSort (MFC )

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#include "stdafx.h"
#include <afxmt.h>
#include <iostream>
#include <afxwin.h>
#include "time.h"
#define Num 10000000
using namespace std;
long wht_length;
long  wht_array[Num];
long  wht_array1[Num];
long  wht_array2[Num];
CEvent faxEvent1(false); 
CEvent faxEvent2(false);
CEvent faxEvent3(false);
CEvent faxEvent(false);
/* 
* 函数名: QuickSort 
* 功能：对起止位置为wht_start和wht_end的数组序列，进行串行快速排序。 
* 输入：无序数组wht_array[1,wht_n] 
* 返回：有序数组wht_array[1,wht_n] 
*/  
int QuickSort(long R[],long  wht_start, long wht_end)
{
	long i=wht_start,j=wht_end;
	long  wht_tmp;
	if(wht_start<wht_end)
	{
		wht_tmp=R[wht_start];
		while(i!=j)
		{
			while(j>i&&wht_array[j]>=wht_tmp)
				j--;
			wht_array[i]=wht_array[j];
			while(i<j&&R[i]<=wht_tmp)
				i++;
			wht_array[j]=wht_array[i];
		}
		wht_array[i]=wht_tmp;
		QuickSort(wht_array,wht_start,i-1);
		QuickSort(wht_array,i+1,wht_end); 
	}
	return 0;
}
/* 
* 函数名: QuickSort1 
* 功能：对起止位置为wht_start和wht_end的数组序列，进行串行快速排序。 
* 输入：无序数组wht_array[1,wht_n/2] 
* 返回：有序数组wht_array[1,wht_n/2] 
*/ 
int QuickSort1(long wht_array1[],long  wht_start, long wht_end)
{
	long i=wht_start,j=wht_end;
	long  wht_tmp;
	if(wht_start<wht_end)
	{

		wht_tmp=wht_array1[wht_start];
		while(i!=j)
		{
			while(j>i&&wht_array1[j]>=wht_tmp)
				j--;
			wht_array1[i]=wht_array1[j];
			while(i<j&&wht_array1[i]<=wht_tmp)
				i++;
			wht_array1[j]=wht_array1[i];
		}
		wht_array1[i]=wht_tmp;
		QuickSort1(wht_array1,wht_start,i-1);
		QuickSort1(wht_array1,i+1,wht_end); 
	}
	return 0;
}
 /*
* 函数名: Merge 
* 功能：对已经排好顺序的两个数组进行归并排序形成一个有序数组。 
* 输入：有序数组wht_array2[1,wht_n/2]，wht_array1[1,wht_n/2] 
* 返回：有序数组wht_array[1,wht_n] 
*/  
void Merge(long  wht_array[],long wht_start,long wht_mid,long wht_length)
{   long *wht_array_temp;
	long i=wht_start,j=wht_mid+1,wht_k=0;
	wht_array_temp=(long *)malloc((wht_length-wht_start+1)*sizeof(long));
	while(i<=wht_mid&&j<=wht_length)
		if(wht_array[i]<=wht_array[j])
		{
			wht_array_temp[wht_k]=wht_array[i];
			i++;wht_k++;
		}
		else
		{
			wht_array_temp[wht_k]=wht_array[j];
			j++;wht_k++;
		}
		while(i<=wht_mid)
		{
			wht_array_temp[wht_k]=wht_array[i];
			i++;wht_k++;

		}
		while(j<=wht_length)
		{
			wht_array_temp[wht_k]=wht_array[j];
			j++;wht_k++;
		}
		for(wht_k=0,i=wht_start;i<=wht_length;wht_k++,i++)
			wht_array[i]=wht_array_temp[wht_k];
		free(wht_array_temp);
}
UINT threadProc4(LPVOID param){
	{QuickSort(wht_array,0,wht_length/2-1);}
	SetEvent(faxEvent1);
	return 0;
}
UINT threadProc5(LPVOID param){
	{QuickSort(wht_array,wht_length/2,wht_length-1);}
	SetEvent(faxEvent2);
	return 0;
}
UINT threadProc6(LPVOID param){
	{Merge(wht_array,0,wht_length/2-1, wht_length-1);}
	SetEvent(faxEvent3);
	return 0;
}
UINT threadProc7(LPVOID param){
	{ QuickSort1(wht_array1,0,wht_length-1);}
	SetEvent(faxEvent);
	return 0;
}
int _tmain(int argc, _TCHAR* argv[])
{  
	//cout<<"MFC实现"<<endl;
	//cout<<"输入数组长度:=";
	//cin>>wht_length;
//	while(TRUE)
	{
		printf("请输入生成的随机数的个数:");
		cin>>wht_length;
		/*读出正确的cin>>wht_length;，返回；否则，继续要求输入*/
//		if((wht_length>=90000) && (wht_length<=10000000))	
		{
//			break;
		}
//		printf("输入错误,数字范围是 [90000~100000]");
	}
	cout<<"随机数生成："<<endl;
	srand(396);
	for(int i=0;i<wht_length;i++)
	{
	wht_array[i]=rand();//产生随机数
	wht_array1[i]=wht_array[i];
	cout<<wht_array[i]<<" ";
	}
	cout<<endl;
	clock_t t1=clock();
    AfxBeginThread(threadProc7,NULL);
	WaitForSingleObject(faxEvent,INFINITE);
	clock_t t2=clock();
	cout<<"串行结果"<<endl;
	for(int i=0;i<wht_length;i++)
		cout<<wht_array[i]<<" ";
	cout<<endl;
	double cost1=t2-t1;
	cout<<"串行时间:="<<cost1<<endl;
	clock_t t3=clock();
	AfxBeginThread(threadProc4,NULL);
	AfxBeginThread(threadProc5,NULL);
	WaitForSingleObject(faxEvent1,INFINITE);
	WaitForSingleObject(faxEvent2,INFINITE);
	AfxBeginThread(threadProc6,NULL);
	WaitForSingleObject(faxEvent3,INFINITE);
	clock_t t4=clock();
	cout<<"并行结果："<<endl;
	for(int i=0;i<wht_length;i++)
		cout<<wht_array[i]<<" ";
	cout<<endl;
	double cost2=t4-t3;
	cout<<"并行时间:="<<cost2<<endl;
	cout<<"加速比为:"<<cost1/cost2<<endl;
	system("pause");
	return 0;
}

QuickSort (MFC )

标签：blog   io   ar   os   sp   for   on   2014   art   

原文地址：http://blog.csdn.net/christprince007/article/details/41750471