我必须计算冒泡排序需要多长时间并打印需要多长时间。在我的程序中,打印的时间始终为 0.00 秒。谁能告诉我我做错了什么?
int main()
{
srand((unsigned)time(NULL));
int arr[5000], arr2[5000];
int i;
time_t start, end;
double timeDiff;
for(i=0; i < 5000; i++)
{
arr[i] = rand() % 100 + 1;
arr2[i] = arr[i];
}
cout << "Here is the initial array:" << endl;
printArray(arr, 5000);
time(&start);
bubbleSort(arr, 5000);
time(&end);
timeDiff = difftime(end, start);
cout << "\nHere is the array after a bubble sort:" << endl;
printArray(arr, 5000);
cout << fixed << setprecision(2) << "\nIt took " << timeDiff << " seconds to bubble sort the array." << endl;
system("pause");
return 0;
}