自己实现一个bubble_sort(冒泡排序)，可以完成不同类型数据的排序

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void bubble_sort(void *arr, int len, int(*cmp)(void*, void*)){int *start = (int*)arr;assert(start && len > 0);int i = 0;for (; i < len; i++){int j = 0;for (; j < len - i - 1; j++){if (cmp(&start[j], &start[j + 1]) > 0){start[j] = start[j] ^ start[j + 1];start[j + 1] = start[j + 1] ^ start[j];start[j] = start[j] ^ start[j + 1];}}}}int cmp_int(void *a, void *b){return *(int*)a - *(int*)b;}int cmp_str(void *a, void *b){return strcmp(*(char**)a, *(char**)b );}void show(int *arr, int len){assert(arr != NULL && len > 0);int i = 0;for (; i < len; i++){printf("%d ", arr[i]);}printf("\n");}int main(){char *str[] = {"bbbb","aaaa","cccc","dddd"};int arr[] = { 3, 2, 12, 34, 45, 3, 23, 23, 0, 56 };int len = sizeof(arr) / sizeof(arr[0]);show(arr, len);bubble_sort(str, 4, cmp_str);show(arr, len);system("pause");return 0;}

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