Cod sursa(job #2507452)

Utilizator Alexandra_GheAlexandra Gheorghe Alexandra_Ghe Data 10 decembrie 2019 12:01:14
Problema Sortare prin comparare Scor 20
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.65 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");

int partitie(int v[],int st,int dr)
{
    swap(v[dr],v[st+rand()%(dr-st+1)]);
    int p=st;
    for(int i=st; i<dr; i++)
    {
        if(v[i]<=v[dr])
        {
            swap(v[i],v[p++]);
        }
    }
    swap(v[p],v[dr]);
    return p;
}

void qs(int v[],int st,int dr)
{
    if(st>=dr)
    {
        return;
    }
    int p=partitie(v,st,dr);
    qs(v,st,p-1);
    qs(v,p+1,dr);
}

int main()
{
    int n,v[101],i;
    in>>n;
    for( i=1; i<=n; i++)
    {
        in>>v[i];
    }
qs(v,1,n);
for(i=1;i<=n;i++)
{
out<<v[i]<<" ";
}
}