Cod sursa(job #2757932)

Utilizator filipinezulDumitrascu Filip Teodor filipinezul Data 7 iunie 2021 17:54:01
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.92 kb
#include <fstream>

using namespace std;

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

const int N=500001;

unsigned int v[N];
int nh=0;
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);
}

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);
    }
}

int main()
{
    int n;
    in>>n;
    nh=0;
    for(int i=1; i<=n; i++)
    {
        int aux;
        in>>aux;
        adauga(aux);
    }
    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;
}