Cod sursa(job #1769404)

Utilizator tudoroprisTudor Opris tudoropris Data 2 octombrie 2016 15:06:13
Problema Sortare prin comparare Scor 60
Compilator cpp Status done
Runda Arhiva educationala Marime 0.98 kb
#include <fstream>

using namespace std;

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

int v[500001], k[250001];

void MergeVector(int l, int r)
{
    int m=(l+r)/2,p=l,q,inc=l;
    q=m+1;
    while(p <= m && q <= r)
    {
        if(v[p] < v[q])
        {
            k[inc]=v[p];
            p++;
        }
        else
        {
            k[inc]=v[q];
            q++;
        }
        inc++;
    }
    for(; p<=m; p++)
    {
        k[inc]=v[p];
        inc++;
    }
    for(; q<=r; q++)
    {
        k[inc]=v[q];
        inc++;
    }
    for(inc=l; inc<=r; inc++)
    {
        v[inc]=k[inc];
    }
}

void MergeSort(int l, int r)
{
    if(l==r)
    {
        return;
    }
    int m=(l+r)/2;
    MergeSort(l,m);
    MergeSort(m+1,r);
    MergeVector(l,r);
}

int main()
{
    int n,i;
    in>>n;
    for(i=1; i<=n; i++)
        in>>v[i];
    MergeSort(1, n);
    for(i=1; i<=n; i++)out<<v[i]<<' ';
    return 0;
}