Cod sursa(job #2219727)

Utilizator adimiclaus15Miclaus Adrian Stefan adimiclaus15 Data 9 iulie 2018 16:54:25
Problema Statistici de ordine Scor 90
Compilator cpp Status done
Runda Arhiva educationala Marime 0.99 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("sdo.in");
ofstream g("sdo.out");
int n,k,a[3000001];
int partitionare(int st,int dr)
{
    int mij,aux,i,j;
    mij=a[(st+dr)/2];
    i=st-1;
    j=dr+1;
    while(i<j)
    {
        do
        {
            i++;
        }
        while(a[i]<mij);
        do
        {
            j--;
        }
        while(a[j]>mij);
        if(i<j)
        {
            aux=a[i];
            a[i]=a[j];
            a[j]=aux;
        }
    }
    return j;
}
void statistica(int st,int dr)
{
    int poz;
    poz=partitionare(st,dr);
    //cout<<poz<<" ";
    if(poz==k)
    {
        g<<a[k]<<" ";
    }
    else
    {
        if(poz<k)
        {
            statistica(poz,dr);
        }
        else
        {
            statistica(st,poz);
        }
    }
}
int main()
{
    int i;
    f>>n>>k;
    for(i=1;i<=n;i++)
    {
        f>>a[i];
    }
    statistica(1,n);
    return 0;
}