Cod sursa(job #2986190)

Utilizator matei.tudoseMatei Tudose matei.tudose Data 27 februarie 2023 21:24:47
Problema Sortare prin comparare Scor 80
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.98 kb
#include <fstream>
#include <vector>
using namespace std;

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

vector<int> numere;

void quicksort(int st, int dr)
{
    if (st < dr)
    {
        int med = (st + dr) / 2;
        int pivot = numere[med];
        swap(numere[med], numere[dr]);
        int firstFree = st;
        int i = st;
        while (i < dr)
        {
            if (numere[i] < pivot)
            {
                swap(numere[firstFree++], numere[i]);
            }
            i++;
        }
        swap(numere[firstFree], numere[dr]);
        quicksort(st, firstFree - 1);
        quicksort(firstFree + 1, dr);
    }
}

int main()
{
    ios_base::sync_with_stdio(false);
    int n;
    fin >> n;
    numere.resize(n);
    for (int i = 0; i < n; i++)
    {
        int numar;
        fin >> numar;
        numere[i] = numar;
    }
    quicksort(0, n - 1);
    for (int i = 0; i < numere.size(); i++)
        fout << numere[i] << " ";
    fout << "\n";
    return 0;
}