Cod sursa(job #2278393)

Utilizator DanutAldeaDanut Aldea DanutAldea Data 7 noiembrie 2018 23:07:28
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.1 kb
#include <fstream>
using namespace std;

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

int n,i,j,v[500001];

int main(){
    fin>>n;
    for(i=1;i<=n;i++){
        fin>>v[i];
    }

    for(i=2;i<=n;i++){
        j=i;
        while(v[j]>v[j/2] && j/2!=0){
            swap(v[j],v[j/2]);
            j=j/2;
        }
    }

    for(i=n;i>=1;i--){
        swap(v[1],v[i]);
        j=1;
        while(j*2<i){
            if(v[j]<=v[j*2] || v[j]<=v[j*2+1]){
                if(2*j+1<i){
                    if(v[j*2]<v[j*2+1]){
                        swap(v[j],v[j*2+1]);
                        j=2*j+1;
                    }else{
                        swap(v[j],v[j*2]);
                        j=2*j;
                    }
                }else{
                    if(v[j]<=v[j*2]){
                        swap(v[j],v[j*2]);
                        j=2*j;
                    }else
                        break;
                }
            }else
                break;
        }
    }

    for(i=1;i<=n;i++)
        fout<<v[i]<<" ";

    return 0;
}