#include <stdio.h>
#include <stdlib.h>
#include <string.h>
typedef char byte;
typedef int (__stdcall *CompareFunction)(const byte*, const byte*);
void __stdcall Bubblesort(byte* array,int size,int elem_size,CompareFunction cmpFunc)
{
for(int i=0; i < size; i++)
{
for(int j=0; j < size-1; j++)
{
//回調比較函數
if(1 == (*cmpFunc)(array+j*elem_size,array+(j+1)*elem_size))
{
//兩個相比較的元素相交換
byte* temp = new byte[elem_size];
memcpy(temp, array+j*elem_size, elem_size);
memcpy(array+j*elem_size,array+(j+1)*elem_size,elem_size);
memcpy(array+(j+1)*elem_size, temp, elem_size);
delete [] temp;
}
}
}
}
//////////////////////////////////////////////////////////////////////////
//對使用者來說,必須有一個回呼函數,其地址要傳遞給Bubblesort()函數。下面有二個簡單的樣本,
//一個比較兩個整數,而另一個比較兩個字串:
int __stdcall CompareInts(const byte* velem1, const byte* velem2)
{
int elem1 = *(int*)velem1;
int elem2 = *(int*)velem2;
if(elem1 < elem2)
return -1;
if(elem1 > elem2)
return 1;
return 0;
}
int __stdcall CompareStrings(const byte* velem1, const byte* velem2)
{
const char* elem1 = (char*)velem1;
const char* elem2 = (char*)velem2;
return strcmp(elem1, elem2);
}
//////////////////////////////////////////////////////////////////////////
int main(int argc, char* argv[])
{
int i;
int array[] = {5432, 4321, 3210, 2109, 1098};
printf("Before sorting ints with Bubblesort:\n");
for(i=0; i < 5; i++)
printf("%d ", array[i]);
Bubblesort((byte*)array, 5, sizeof(array[0]), &CompareInts);
printf("\nAfter the sorting:\n");
for(i=0; i < 5; i++)
printf("%d ", array[i]);
printf("\n");
system("pause");
return 0;
}