Cod sursa(job #2757939)

Utilizator mihai_700Mihai Barbulescu mihai_700 Data 7 iunie 2021 18:09:16
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.88 kb
#include <fstream>
using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");

const int NMAX = 500001;
int v[NMAX], n, nh;

void coboara(int p)
{
    int fs = 2*p, fd = 2*p + 1, bun = p;
    if (fs <= nh && v[fs] > v[bun])
        bun = fs;
    
    if (fd <= nh && v[fd] > v[bun])
        bun = fd;

    if (bun != p)
    {
        swap(v[bun], v[p]);
        coboara(bun);
    }
}

void urca(int p)
{
    while (p > 1 && v[p] > v[p / 2])
    {
        swap(v[p], v[p / 2]);
        p /= 2;
    }
}

void adauga(int val)
{
    v[++nh] = val;
    urca(nh);
}

int main()
{
    in >> n;
    for (int i = 1; i <= n; ++i)
    {
        int x;
        in >> x;
        adauga(x);
    }

    for (int i = n; i >= 1; i--)
    {
        swap(v[1], v[i]);
        nh--;
        coboara(1);
    }

    for (int i = 1; i <= n; ++i)
    {
        out << v[i] << ' ';
    }
    return 0;
}