Cod sursa(job #1250052)

Utilizator diana-t95FMI Tudoreanu Diana Elena diana-t95 Data 27 octombrie 2014 19:35:51
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.85 kb
#include <fstream>
#include<iostream>
using namespace std;
int v[10000], w[10000];
int N;
void citire()
{
    fstream f("algsort.in");
    f>>N;
    int i;
    for (i=1;i<=N;i++)
        f>>v[i];

}
void mergesort(int st, int dr)
{
    if (st<dr)

    {
        int i, j, k, mijl=(st+dr)/2;
        mergesort(st, mijl);
        mergesort(mijl+1, dr);
        i=0; j=st;
        while (j<=mijl) w[i++]=v[j++];
        i=0; j=mijl+1; k=st;
        while (i<=mijl-st && j<=dr)
        {
            if (w[i] <= v[j]) v[k++] = w[i++];
                else v[k++] = v[j++];
        }
        while (k < j)
        v[k++] = w[i++];
    }
}
void afisare()
{
    FILE *writing=fopen("algsort.out", "w");
    for (int i=1;i<=N;i++)
        fprintf(writing, "%d ", v[i]);
}
int main()
{
    citire();
    mergesort(1, N);
    afisare();
}