Cod sursa(job #1604350)

Utilizator SanduStefaniaSandu Stefania Iulia SanduStefania Data 18 februarie 2016 10:23:33
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.75 kb
#include <fstream>

using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int n,a[500010],i;
void interclasare(int st, int mij, int dr)
{
    int b[500010],i,j,k,t;
    for (i=st;i<=dr;i++) b[i]=a[i];
    i=st;j=mij+1;k=st-1;
    while (i<=mij && j<=dr)
    {
        if (b[i]<b[j]) a[++k]=b[i++];
        else a[++k]=b[j++];
    }
    for (t=i;t<=mij;t++) a[++k]=b[t];
    for (t=j;t<=dr;t++) a[++k]=b[t];

}
void Sort(int st, int dr)
{
    int mij;
    if (st!=dr)
    {
        mij=(st+dr)/2;
        Sort(st,mij);
        Sort(mij+1,dr);
        interclasare (st,mij,dr);
    }
}
int main()
{
    f>>n;
    for (i=1;i<=n;i++) f>>a[i];
    Sort(1,n);
    for (i=1;i<=n;i++) g<<a[i]<<" ";
    return 0;
}