Cod sursa(job #3253856)

Utilizator nicushor21Pirlog Marian Nicolae nicushor21 Data 5 noiembrie 2024 00:10:50
Problema Sortare prin comparare Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.92 kb
#include <bits/stdc++.h>
using namespace std;
ifstream fin("algsort.in");
ofstream fout("algsort.out");
int n,v[500001],aux[500001];

void quicksort(int st, int dr){
    if(st>=dr)
        return;

    int i=st,j=dr;
    bool pivot=0;
    while(i<j){
        if(!pivot){
            if(v[i]>v[j]){
                swap(v[i],v[j]);
                pivot = 1-pivot;
                i++;
            }else{
                j--;
            }
        }else{
            if(v[i]>v[j]){
                swap(v[i],v[j]);
                pivot=1-pivot;
                j--;
            }else{
                i++;
            }
        }
    }
    quicksort(st, i-1);
    quicksort(i+1, dr);
}

int main()
{
    srand(time(0));
    fin>>n;
    for(int i=1;i<=n;i++)
        fin>>v[i];
    random_shuffle(v+1,v+n+1);
    quicksort(1,n);
    for(int i=1;i<=n;i++)
        fout<<v[i]<<' ';
    return 0;
}