Cod sursa(job #2195018)

Utilizator pasoi_stefanPasoi Stefan pasoi_stefan Data 14 aprilie 2018 22:19:29
Problema Sortare prin comparare Scor 60
Compilator cpp Status done
Runda Arhiva educationala Marime 0.73 kb
#include<fstream>
using namespace std;
ifstream cin("algsort.in");
ofstream cout("algsort.out");
int n,v[100005],tmp[100005];
void mergesort(int st,int dr)
{
    if(st<dr)
    {
        int m=(st+dr)/2;
        mergesort(st,m);
        mergesort(m+1,dr);
        int i=st, j=m+1, k=0;
        while(i<=m && j<=dr)
        {
            if(v[i]<v[j])
                tmp[++k]=v[i++];
            else tmp[++k]=v[j++];
        }
        while(i<=m) tmp[++k]=v[i++];
        while(j<=dr) tmp[++k]=v[j++];
        for(int i=st,j=1;i<=dr;i++,j++)
            v[i]=tmp[j];
    }
}
int main()
{
    cin>>n;
    for(int i=1;i<=n;i++)
        cin>>v[i];
    mergesort(1,n);
    for(int i=1;i<=n;i++)
        cout<<v[i]<<' ';
}