Cod sursa(job #1009249)

Utilizator NitaMihaitavoidcube NitaMihaita Data 12 octombrie 2013 18:39:29
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.78 kb
#include<fstream>
using namespace std;
int v[500001],z[500001];
//Sortare prin interclasare

void interclasare(int i,int j)
{
    int m=(i+j)/2,p=i,q=m+1,k=0;
    while(p<=m && q<=j)
        if(v[p]<v[q])z[k++]=v[p++];
        else z[k++]=v[q++];
    while(p<=m)z[k++]=v[p++];
    while(q<=j)z[k++]=v[q++];
    for(p=0,q=i;p<k;++q,++p)
        v[q]=z[p];
}
void MergeSort(int i,int j)
{
    if(i<j)
    {
        int m=(i+j)/2;
        MergeSort(i,m);
        MergeSort(m+1,j);
        interclasare(i,j);
    }
}
int main()
{
    ifstream f("algsort.in");
    ofstream g("algsort.out");
    int i;
    f>>v[0];
    for(i=1;i<=v[0];++i)
        f>>v[i];
    MergeSort(1,v[0]);
    for(i=1;i<=v[0];g<<v[i]<<" ",++i);
    f.close();
    g.close();
    return 0;
}