Cod sursa(job #2237304)

Utilizator CatincaBCatinca Balinisteanu CatincaB Data 1 septembrie 2018 15:53:21
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.69 kb
#include <fstream>

using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
const int N = 500010;
int n,x[N];
void heap_down(int,int);
int main()
{
    f>>n;
    for(int i=1;i<=n;i++)
        f>>x[i];
    for(int i=n/2;i>=1;i--)
        heap_down(i,n);
    for(int i=n;i>=1;i--)
    {
        swap(x[1],x[i]);
        heap_down(1,i-1);
    }
    for(int i=1;i<=n;i++)
        g<<x[i]<<' ';
    return 0;
}
void heap_down(int tata,int lung)
{
    int fiu=2*tata;
    if(fiu>lung)return;
    if(fiu+1<=lung)
        if(x[fiu]<x[fiu+1])
            fiu++;
    if(x[tata]<x[fiu])
    {
        swap(x[tata],x[fiu]);
        heap_down(fiu,lung);
    }
}