[C語言] 使用回調函數實現冒泡排序

[C語言] 使用回調函數實現冒泡排序

#include <stdio.h>
#include <string.h>

int int_cmp(const void *p1, const void *p2)
{
    if (*(int *)p1 > *(int *)p2)
    {
        return 1;
    }
    else if (*(int *)p1 == *(int *)p2)
    {
        return 0;
    }
    else
    {
        return -1;
    }
}

void swap(void *p1, void *p2, int size)
{
    int i = 0;
    for (i = 0; i < size; i++)
    {
        char tmp = *((char *)p1 + i);
        *((char *)p1 + i) = *((char *)p2 + i);
        *((char *)p2 + i) = tmp;
    }
}

void bubble(void *base, int count, int size, int(*cmp)(const void *, const void *))
{
    int i = 0;
    int j = 0;
    for (i = 0; i < count - 1; i++)
    {
        for (j = 0; j < count - i - 1; j++)
        {
            if (cmp((char *)base +size*j,(char *)base+size*(j+1))>0)
            {
                swap((char *)base + size*j, (char *)base + size*(j + 1), size);
            }
        }
    }
}

int str_cmp(const void *p1, const void *p2)
{
    return strcmp((char *)(*(int *)p1), (char *)(*(int *)p2));
}

int main()
{
    //int arr[] = { 1, 3, 5, 7, 9, 2, 4, 6, 8, 0 };
    char *arr[] = { "dddd", "bbbb", "cccc", "aaaa" };
    int i = 0;
    bubble(arr, sizeof(arr) / sizeof(arr[0]), sizeof(char *), str_cmp);
    for (i = 0; i < 4; i++)
    {
        printf("%s\n", arr[i]);
    }
    printf("\n");
    return 0;
}