Cod sursa(job #2279006)

Utilizator MirceaCozmaciucMircea-Vlad Cozmaciuc MirceaCozmaciuc Data 8 noiembrie 2018 20:14:48
Problema Sortare prin comparare Scor 40
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.75 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");

int pivot(int st, int dr, int v[500000])
{
    int piv=v[st],x;
    while(st<=dr)
    {
        if(v[st]>v[dr])
        {
            x=v[st];
            v[st]=v[dr];
            v[dr]=x;
        }
        if(piv==v[st])
            dr--;
        else
            st++;
    }
    return st;
}

void qs(int st, int dr, int v[500000])
{
    if(st<=dr)
    {
        int k=pivot(st,dr,v);
        qs(st,k-1,v);
        qs(k+1,dr,v);
    }
}

int main()
{
    int n,v[500000];
    f>>n;
    for(int i=1; i<=n; i++)
        f>>v[i];
    qs(1,n,v);
    for(int i=1; i<=n; i++)
        g<<v[i]<<" ";
    return 0;
}