Cod sursa(job #2236245)

Utilizator valorosu_300Cristian Gherman valorosu_300 Data 28 august 2018 20:31:47
Problema Sortare prin comparare Scor 40
Compilator cpp Status done
Runda Arhiva educationala Marime 0.77 kb
#include <fstream>
using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");
const int N = 500002;
int v[N];
int pivot(int st, int dr){
    int p = v[st], i = st - 1, j = dr + 1;
    while(1){
        do{
            i++;
        }while(v[i] < p);
        do{
            j--;
        }while(v[j] > p);
        if(i >= j)
            return j;
        swap(v[i],v[j]);
    }
}
void quickSort(int st, int dr){
    while(st < dr){
        int p = pivot(st,dr);
        quickSort(st,p);
        st = p+1;
        p = dr;
    }
}
int main()
{
    int n;
    in>>n;
    for(int i=1;i<=n;i++)
        in>>v[i];
    in.close();
    quickSort(1,n);
    for(int i=1;i<=n;i++)
        out<<v[i]<<" ";
    out.close();
    return 0;
}