Cod sursa(job #1008904)

Utilizator NitaMihaitavoidcube NitaMihaita Data 12 octombrie 2013 10:59:09
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.82 kb
#include<fstream>
using namespace std;
long long v[500001],z[500001];
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];++p;}
        else if(v[p]>v[q]){z[k++]=v[q];++q;}
        else {z[k++]=v[p];++p;++q;}
    while(p<=m){z[k++]=v[p];++p;}
    while(q<=j){z[k++]=v[q];++q;}
    for(p=0,q=i;p<k;++p,++q)
        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 n,i;
    f>>n;
    for(i=1;i<=n;++i)
        f>>v[i];
    MergeSort(1,n);
    for(i=1;i<=n;++i)
        g<<v[i]<<" ";
    f.close();
    g.close();
    return 0;
}