Cod sursa(job #3254829)

Utilizator Alexbora13Bora Ioan Alexandru Alexbora13 Data 8 noiembrie 2024 22:30:19
Problema Sortare prin comparare Scor 80
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.71 kb
#include <bits/stdc++.h>

using namespace std;

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

const int NMAX = 500000;

int n;
int v[NMAX+1], pos, pivot;

int partitie(int st, int dr, int val)
{
    pos = st;
    for(int i=st; i<=dr; i++)
    {
        if(v[i] <= val)
            swap(v[pos++], v[i]);
    }
    return pos-1;
}

void dei(int st, int dr)
{
    if(st <= dr)
    {
        pivot = partitie(st, dr, v[dr]);
        dei(st, pivot-1);
        dei(pivot+1, dr);
    }
}

int main()
{
    fin >> n;
    for(int i=1; i<=n; i++)
        fin >> v[i];
    random_shuffle(v+1,v+1+n);
    dei(1,n);
    for(int i=1; i<=n; i++)
        fout << v[i] << ' ';
    return 0;
}