Cod sursa(job #2614861)

Utilizator Vlad_AnicaAnica-Popa Vlad-Ioan Vlad_Anica Data 12 mai 2020 19:24:24
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.28 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 a[], int left, int right)
{
    int i=left, j=right, pivot=a[left+(rand()%(right-left))];
    while (i<=j)
    {
        while (a[i]<pivot)
            i++;
        while (a[j]>pivot)
            j--;
        if (i<=j)
            swap(a[i++],a[j--]);
    }
    if (i<right)
        quick_like_sonic_sort(a,i,right);
    if (j>left)
        quick_like_sonic_sort(a,left,j);
}


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;
}