Cod sursa(job #2001745)

Utilizator Neamtu_StefanStefan Neamtu Neamtu_Stefan Data 17 iulie 2017 16:19:57
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.69 kb
#include <fstream>

using namespace std;

ifstream fin("algsort.in");
ofstream fout("algsort.out");

int v[500002];

void quicksort(int start, int stop)
{
    int i=start,j=stop,nr;
    nr=v[(i+j) / 2];
    do
    {
        while (i<stop && nr>v[i]) i++;
        while (j>start && nr<v[j]) j--;

        if (i<=j)
        {
            swap(v[i],v[j]);
            i++,j--;
        }

    }while (i<=j);
    if (j > start) quicksort(start,j);
    if (i < stop) quicksort(i,stop);
}

int main()
{
    int n;

    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] << " ";

    return 0;
}