Cod sursa(job #2736669)

Utilizator MihaiZ777MihaiZ MihaiZ777 Data 3 aprilie 2021 19:13:51
Problema Sortare prin comparare Scor 60
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.83 kb
#include <iostream>
#include <fstream>
using namespace std;

ifstream fin("algsort.in");
ofstream fout("algsort.out");

int n;
int v[500005];


void QuickSort(int v[], int lf, int rg)
{
    if (lf >= rg)
    {
        return;
    }

    int mid = (lf + rg) / 2;
    swap(v[mid], v[rg]);


    int firstFree = lf;

    for (int i = lf; i < rg; i++)
    {
        if (v[i] <= v[rg])
        {
            swap(v[i], v[firstFree]);
            firstFree++;
        }
    }

    swap(v[rg], v[firstFree]);

    QuickSort(v, lf, firstFree - 1);
    QuickSort(v, firstFree + 1, rg);

}



int main()
{
    fin >> n;

    for (int i = 1; i <= n; i++)
    {
        fin >> v[i];
    }

    QuickSort(v, 1, n);
    for (int i = 1; i <= n; i++)
    {
        fout << v[i] << ' ';
    }


    return 0;
}