Cod sursa(job #2703543)

Utilizator tavi255Varzaru Octavian Stefan tavi255 Data 8 februarie 2021 18:54:23
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.01 kb
#include <iostream>
#include <fstream>

using namespace std;

const int Max=500005;

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

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

void intercls(int st,int dr,int mid)
{
    int i=st,j=mid+1,c=0;

    while(i<=mid && j<=dr)
        if(v[i]<v[j])
        {
            aux[++c]=v[i];
            i++;
        }

        else
        {
            aux[++c]=v[j];
            j++;
        }

    while(i<=mid)
    {
        aux[++c]=v[i];
        i++;
    }

    while(j<=dr)
    {
        aux[++c]=v[j];
        j++;
    }

    int k=st;
    for(int i=1;i<=c;i++)
        v[k++]=aux[i];


}

void merge_sort(int st,int dr)
{
    if(st<dr)
    {
        int mid=((st+dr)>>1);
        merge_sort(st,mid);
        merge_sort(mid+1,dr);
        intercls(st,dr,mid);

    }
}

int main()
{
    in>>n;
    for(int i=1;i<=n;i++)
        in>>v[i];
        merge_sort(1,n);

    for(int i=1;i<=n;i++)
        out<<v[i]<<" ";

    return 0;
}