Cod sursa(job #1969598)

Utilizator tifui.alexandruTifui Ioan Alexandru tifui.alexandru Data 18 aprilie 2017 15:44:14
Problema Sortare prin comparare Scor 0
Compilator cpp Status done
Runda Arhiva educationala Marime 0.79 kb
#include <bits/stdc++.h>

using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int v[500001];
int n;
int q_partition(int p, int q)
{
    int i=p,j=q,pivot;
    pivot=(p+q)/2;
    while(i<=j)
    {
        while(v[i]<v[pivot])
            i++;
        while(v[j]>v[pivot])
            j--;
        if(i<=j)
        {
            swap(v[i],v[j]);
            i++;
            j--;
        }
    }
    return i;
}
void quick_sort(int p, int q)
{
    int k=q_partition(p,q);
    if(p<k-1)
        quick_sort(p,k-1);
    if(k<q)
        quick_sort(k,q);
}
void sortare()
{
    srand(time(NULL));
    quick_sort(1,n);
}
int main()
{f>>n;
for(int i=1;i<=n;i++)
    f>>v[i];
sortare();
for(int i=1;i<=n;i++)
    g<<v[i]<<' ';

    return 0;
}