Cod sursa(job #2617569)

Utilizator Vlad_AnicaAnica-Popa Vlad-Ioan Vlad_Anica Data 22 mai 2020 11:34:17
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.42 kb
#include <iostream>
#include <fstream>
#include<cstdlib>
using namespace std;

ifstream fin ("algsort.in");
ofstream fout ("algsort.out");
int a[500000];

/*void mergesort( int st, int dr )
{
    if(st!=dr)
    {
        int mij=((st+dr)>>1);
        mergesort(st,mij);
        mergesort(mij+1,dr);
        int k,j,cpst=st;
        k=st;
        j=mij+1;
        while(k<=mij && j<=dr)
            if(v[k]<v[j])
                a[st++]=v[k++];
            else
                a[st++]=v[j++];
        while(k<=mij)
            a[st++]=v[k++];
        while(j<=dr)
            a[st++]=v[j++];
        for(j=cpst;j<=dr;j++)
            v[j]=a[j];
    }
}*/
void quick_like_sonic_sort(int v[], int left, int right)
{
    if(left<right)
    {
        int pivot=v[left+rand()%(right-left)];
        int e=right, b=left;
        while(v[e]>pivot)
            e--;
        while(v[b]<pivot)
            b++;
        while(b<e)
        {
            swap(v[b], v[e]);
            do
                e--;
            while(v[e]>pivot);
            do
                b++;
            while(v[b]<pivot);
        }
        quick_like_sonic_sort(v, left, e);
        quick_like_sonic_sort(v, e+1, right);

    }
}


int main()
{
    int i,n;
    fin >>n;
    for(i=0;i<n;i++)
        fin >> a[i];
    quick_like_sonic_sort(a,0,n-1);
    for(i=0;i<n;i++)
        fout << a[i] << " ";
    return 0;
}