Pagini recente » Istoria paginii runda/graf3/clasament | Cod sursa (job #1815840)
#include <fstream>
#include <algorithm>
#include <ctime>
int v[1<<19];
int n;
void quicksort(int l, int r)
{
int i=l, j=r, pivot = v[(std::rand()%(r-l+1)) + l];
do
{
while (v[i] < pivot && i <= r)
++i;
while (v[j] > pivot && j >= l)
--j;
if (i <= j)
{
std::swap(v[i], v[j]);
++i; --j;
}
}while(i <= j);
if (i < r)
quicksort(i, r);
if (l < j)
quicksort(l, j);
}
int main()
{
std::srand(std::time(0));
std::ifstream fin("algsort.in");
std::ofstream fout("algsort.out");
fin>>n;
for (int i = 0; i < n; ++i)
fin>>v[i];
quicksort(0, n-1);
for (int i = 0; i < n; ++i)
fout<<v[i]<<" ";
fout.close();
fin.close();
return 0;
}