Cod sursa(job #2272237)

Utilizator adimiclaus15Miclaus Adrian Stefan adimiclaus15 Data 29 octombrie 2018 21:18:36
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.08 kb
#include <iostream>//Tema laborator
#include <fstream>

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

int n,v[500005];
void interclaseaza(int st,int dr,int m)
{
    int i,j,k,a[500005];
    i=st;
    j=m+1;
    k=0;
    while(i<=m && j<=dr)
    {
        if(v[i]<v[j])
        {
            k++;
            a[k]=v[i];
            i++;
        }
        else
        {
            k++;
            a[k]=v[j];
            j++;
        }
    }
    while(i<=m)
    {
        k++;
        a[k]=v[i];
        i++;
    }
    while(j<=dr)
    {
        k++;
        a[k]=v[j];
        j++;
    }
    k=0;
    for(i=st;i<=dr;i++)
    {
        k++;
        v[i]=a[k];
    }
}
void MergeSort(int st,int dr)
{
    if(st<dr)
    {
        int m=(st+dr)/2;
        MergeSort(st,m);
        MergeSort(m+1,dr);
        interclaseaza(st,dr,m);
    }
}
int main()
{
    int i;
    f>>n;
    for(i=1;i<=n;i++)
    {
        f>>v[i];
    }
    MergeSort(1,n);
    for(i=1;i<=n;i++)
        g<<v[i]<<" ";
    return 0;
}