Cod sursa(job #2910596)

Utilizator andreea_eliza_8Radu Andreea Eliza andreea_eliza_8 Data 22 iunie 2022 16:58:04
Problema Sortare prin comparare Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.68 kb
#include <fstream>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int v[500005];

void quicksort(int lf, int rg)
{
    if(lf>=rg)
        return;
    int firstfree=lf;
    int med=(lf+rg)/2;
    swap(v[rg], v[med]);
    for(int i=lf; i<=rg-1; i++)
        if(v[i]<v[rg])
        {
            swap(v[i], v[firstfree]);
            firstfree++;
        }
    swap(v[rg], v[firstfree]);
    quicksort(lf, firstfree-1);
    quicksort(firstfree+1, rg);
}

int main()
{
    int n;
    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]<<" ";
    return 0;
}