Cod sursa(job #2534734)

Utilizator Arthur901Flaviu Pop Arthur901 Data 30 ianuarie 2020 21:39:18
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.2 kb
#include <iostream>
#include <fstream>
using namespace std;

int n, i,j,k;

void Merge(int v[], int s, int m, int d)
{
    int n1 = m - s + 1;
    int n2 = d - m;

    int vs[n1];
    int vd[n2];

    for(i = 0; i < n1; i++)
        vs[i] = v[s + i];

    for(i = 0; i < n2; i++)
        vd[i] = v[m + i + 1];

    i = 0;
    j = 0;
    k = s;
    while( i <  n1 && j <  n2)
    {
        if(vs[i] < vd[j])
        {
            v[k] = vs[i];
            i++;
        }

        else
        {
            v[k] = vd[j];
            j++;
        }
        k++;
    }
     while( i < n1)
    {
         v[k] = vs[i];
         i++;
         k++;

    }
     while( j < n2)
    {
        v[k] = vd[j];
        j++;
        k++;
    }
}
void MergeSort(int v[], int s, int d)
{
    if(s < d)
    {
    int m = s + (d-s)/2;
    MergeSort(v, s, m);
    MergeSort(v, m+1, d);
    Merge(v, s, m, d);
    }



}

int main()
{
    ifstream f("algsort.in");
    ofstream g("algsort.out");
    int v[500002];
    f>>n;
    for( i = 0; i < n; i++)
        f>> v[i];

    MergeSort(v, 0, n-1);

    for( i = 0; i < n; i++)
        g << v[i]<< " ";

    return 0;
}