Cod sursa(job #2608949)

Utilizator DeliaGhergheGherghe Ioana-Delia DeliaGherghe Data 1 mai 2020 22:10:11
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.85 kb
#include <iostream>
#include <fstream>
using namespace std;

int v[500000], c[500000];
int n;

void interclasare(int st,int mij,int dr)
{
    int k=1,i=st,j=mij+1;
    while(i<=mij&&j<=dr)
      if(v[i]<v[j])
        c[k++]=v[i++];
        else c[k++]=v[j++];
    while(i<=mij)
        c[k++]=v[i++];
    while(j<=dr)
        c[k++]=v[j++];
    k--;
    for(i=1;i<=k;i++)
        v[st+i-1]=c[i];

}

void divide(int st,int dr)
{
    if(st<dr)
    {
        divide(st,(st+dr)/2);
        divide((st+dr)/2+1,dr);
        interclasare(st,(st+dr)/2,dr);
    }
}

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

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

   divide(1,n);

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

    fin.close();
    fout.close();
    return 0;
}