Cod sursa(job #2901344)

Utilizator marinee.anca17@yahoo.comChiricuta Marina Anca [email protected] Data 13 mai 2022 16:53:07
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 0.69 kb
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
const int maxN = 500005;
int n, v[maxN], h[maxN];
void mergeSort(int st, int dr)
{
    if(st >= dr)
        return;
    int mij = (st + dr) / 2;
    mergeSort(st, mij);
    mergeSort(mij + 1, dr);
    int i = st, j = mij + 1, k = st;
    while(i <= mij || j <= dr)
    {
        if(j > dr || (i <= mij && v[i] < v[j]))
            h[k++] = v[i++];
        else
            h[k++] = v[j++];
    }
    for(i = st; i <= dr; i++)
        v[i] = h[i];
}
int main()
{   f >> n;
    for(int i = 1; i <= n; i++)
        f >> v[i];
    mergeSort(1, n);
    for(int i = 1; i <= n; i++)
        g << v[i] << ' ';
    return 0;
}