Cod sursa(job #2900759)

Utilizator maria10Cioclov Maria maria10 Data 12 mai 2022 09:10:23
Problema Sortare prin comparare Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.6 kb
#include <fstream>
#include <cstdlib>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n, v[500005],a[500005];

void quicksort(int st, int dr)
{
    if(st>=dr) return;

    int p=st + rand() % (dr-st);

    swap(v[p], v[dr]);

    int i=st-1;
    for(int j=st;j<dr;j++)
        if(v[j]<v[dr])
            i++, swap(v[i], v[j]);

    i++;
    swap(v[i], v[dr]);
    quicksort(st, i-1);
    quicksort(i+1, dr);

}


int main()
{
    fin>>n;
    for(int i=1;i<=n;i++) fin>>v[i];

    quicksort(1,n);

    for(int i=1;i<=n;i++) fout<<v[i]<<" ";
}