Cod sursa(job #1987350)

Utilizator Lazar_LaurentiuLazar Laurentiu Lazar_Laurentiu Data 30 mai 2017 14:43:52
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.74 kb
#include <iostream>
#include <fstream>

using namespace std;

int n,a[500001],va[500001];
void interclaseaza(int inc,int sf){
  int mij=(inc+sf)/2,i,ind1,ind2;
  for(i=inc,ind1=inc,ind2=mij+1;i<=sf;i++){
    if(ind2>sf||(ind1<=mij&&a[ind1]<a[ind2]))
      va[i]=a[ind1++];
    else
      va[i]=a[ind2++];
  }
  for(i=inc;i<=sf;i++)a[i]=va[i];
}
void sorteaza(int inc,int sf){
  if(inc!=sf){
    int mij=(inc+sf)/2;
    sorteaza(inc,mij);
    sorteaza(mij+1,sf);
    interclaseaza(inc,sf);
  }
}

int main()
{
    ifstream f ("algsort.in");
    ofstream g ("algsort.out");
    f>>n;
    for(int i=1;i<=n;i++)f>>a[i];
    sorteaza(1,n);
    for(int i=1;i<=n;i++)g<<a[i]<<" ";
    f.close ();
    g.close ();
    return 0;
}