Cod sursa(job #2200863)

Utilizator TudorCaloianCaloian Tudor-Ioan TudorCaloian Data 2 mai 2018 20:46:13
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.99 kb
#include <bits/stdc++.h>

using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");

int aux[500001], v[500001], n;

void merge(int v[], int st, int dr, int mij)
{

    int poz = st;
    int i = st;
    int j = mij + 1;
    while( i <= mij || j <= dr)
    {
        if(j > dr || (i <= mij && v[i] < v[j]))
        {
            aux[poz] = v[i];
            i++;
        }
        else
        {
           aux[poz] = v[j];
           j++;
        }
        poz++;
    }
    for(i = st; i <= dr; i++)
        v[i] = aux[i];
}

void mergeSort(int v[], int st, int dr)
{
    int mij;
    if(st < dr)
    {
        mij = (st+dr)/2;
        mergeSort(v, st, mij);
        mergeSort(v, mij+1, dr);
    }
    else
        return;
    merge(v, st, dr, mij);





}

int main()
{
    f >> n;
    for(int i = 1; i <= n; i++)
        f >> v[i];
    mergeSort(v, 1, n);
    for(int i = 1; i <= n; i++)
        g << v[i] << " ";
    return 0;
}