Cod sursa(job #1981003)

Utilizator tifui.alexandruTifui Ioan Alexandru tifui.alexandru Data 14 mai 2017 16:19:01
Problema Sortare prin comparare Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 0.84 kb
#include <bits/stdc++.h>
#define Nmax 500001
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int a[Nmax];
void comb_heap(int i, int n)
{
    int t,fiu,val;
    val=a[i];
    t=i;
    fiu=2*i;
    while(fiu<=n)
    {
        if(fiu<n and a[fiu]<a[fiu+1])
            fiu++;
        if(val<a[fiu])
        {
            a[t]=a[fiu];
            t=fiu;
            fiu*=2;
        }
        else fiu=n+1;
    }
    a[t]=val;
}
void do_heap(int n)
{
    for(int i=n/2;i>0;i--)
        comb_heap(i,n);
}
void heap_sort(int n)
{
    for(int i=n;i>1;i--)
    {
        swap(a[i],a[1]);
        do_heap(i-1);
    }
}
int main()
{
    int n;
    f>>n;
    for(int i=1;i<=n;i++)
        f>>a[i];
    do_heap(n);
    heap_sort(n);
    for(int i=1;i<=n;i++)
        g<<a[i]<<' ';

    return 0;
}