Cod sursa(job #2507461)

Utilizator nicoleta_mnMartin nicoleta nicoleta_mn Data 10 decembrie 2019 12:14:30
Problema Sortare prin comparare Scor 40
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.73 kb
#include <fstream>

using namespace std;

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

int partitie3(int v[],int st,int dr , int &p1 , int &p2)
{
    p1=st;
    p2=dr-1;
    for(int i=st; i<=p2;)
    {
    if(v[i]<v[dr])
    {
    swap(v[i],v[p1++]);
    i++;
    }
    else if(v[i]>v[dr])
    {
    swap(v[i], v[p2--]);
    }
    else i++;
    }
    swap(v[dr],v[++p2]);
}

void qs(int v[],int st,int dr)
{
    if(st>=dr)
    {
        return;
    }
    int p1,p2;
    partitie3(v,st,dr,p1,p2);
    qs(v,st,p1-1);
    qs(v,p2+1,dr);
}
int main()
{
    int v[100001],i,n;
    cin>>n;
    for(i=1; i<=n; i++)
    {
        cin>>v[i];
    }
    qs(v,1,n);
    for(i=1; i<=n; i++)
    {
        cout<<v[i]<<" ";
    }
    return 0;
}