Cod sursa(job #2061056)

Utilizator dobrebogdanDobre Bogdan Mihai dobrebogdan Data 8 noiembrie 2017 21:38:51
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.88 kb
#include<cstdio>
#include<cmath>
#include<cstdlib>
#include<algorithm>
#include<ctime>
using namespace std;
const int nmax=500000;
void quicks(int *v,int st,int dr)
{
    if(st>=dr)
    return;
    int piv=v[(rand()%(dr-st+1))+st];
    int poz=st-1;
    int ps,pd,i;
    for(i=st; i<=dr; i++)
        if(v[i]<=piv)
        {
            poz++;
            swap(v[poz],v[i]);
        }
         //   printf("%d %d %d\n",st,dr,poz);

    pd=poz+1;
    ps=poz;
    for(i=st;i<=ps;i++)
    if(v[i]==piv)
    {
    swap(v[i],v[ps]);
    ps--;
    }
    quicks(v,st,ps);
    quicks(v,pd,dr);
}
int main()
{
    freopen("algsort.in","r",stdin);
    freopen("algsort.out","w",stdout);
    int i,n,ve[nmax+5];
    scanf("%d",&n);
    for(i=1; i<=n; i++)
        scanf("%d",&ve[i]);
    quicks(ve,1,n);
    for(i=1;i<=n;i++)
    printf("%d ",ve[i]);
    return 0;
}