Cod sursa(job #2540418)

Utilizator DanutAldeaDanut Aldea DanutAldea Data 7 februarie 2020 09:54:45
Problema Sortare prin comparare Scor 60
Compilator cpp-32 Status done
Runda Arhiva educationala Marime 0.75 kb
#include <fstream>
#include <ctime>
#include <random>
using namespace std;

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

int n,v[500001],i;

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

    int i=st,j=dr,aux;
    int di=0;
    int dj=-1;
    while(i<j){
        if(v[i]>v[j]){
            swap(v[i],v[j]);

            aux=di;
            di=-dj;
            dj=-aux;
        }
        i+=di;
        j+=dj;
    }

    quick(st,i-1);
    quick(i+1,dr);
}

int main(){
    srand(time(0));

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

    for(i=n;i;i--)
        swap(v[rand()*1LL*rand()%i+1],v[i]);

    quick(1,n);

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

    return 0;
}