Cod sursa(job #2753299)

Utilizator matei.tudoseMatei Tudose matei.tudose Data 22 mai 2021 12:25:24
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.28 kb
#include <fstream>
#include <vector>
using namespace std;

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

vector<int> numerele_initiale, final;
int32_t n;

void interclasare(int32_t st, int32_t dr, int32_t med)
{
    int32_t i = st, j = med + 1;
    while (i <= med && j <= dr)
    {
        if (numerele_initiale[i] < numerele_initiale[j])
        {
            final.push_back(numerele_initiale[i++]);
        }
        else
        {
            final.push_back(numerele_initiale[j++]);
        }
    }

    while (i <= med)
    {
        final.push_back(numerele_initiale[i++]);
    }
    while (j <= dr)
    {
        final.push_back(numerele_initiale[j++]);
    }
    for (i = st, j = 0; i <= dr; i++, j++)
        numerele_initiale[i] = final[j];
    final.clear();
}

void mergesort(int32_t st, int32_t dr)
{
    if (st < dr)
    {
        int med = (st + dr) / 2;
        mergesort(st, med);
        mergesort(med + 1, dr);
        interclasare(st, dr, med);
    }
}

int main()
{
    fin >> n;
    for (int i = 0; i < n; i++)
    {
        int32_t numar;
        fin >> numar;
        numerele_initiale.push_back(numar);
    }
    mergesort(0, n - 1);
    for (int i = 0; i < numerele_initiale.size(); i++)
        fout << numerele_initiale[i] << " ";
    fout << "\n";
    return 0;
}