Cod sursa(job #2638316)

Utilizator RTG123Razvan Diaconescu RTG123 Data 27 iulie 2020 19:35:55
Problema Sortare prin comparare Scor 100
Compilator cpp-64 Status done
Runda Arhiva educationala Marime 1.29 kb
#include <iostream>
#include <fstream>
using namespace std;
ifstream f("algsort.in");
ofstream g("algsort.out");
int n,v[500001],p=1,m,tmp[500001];
/*void quicks (int v[],int st,int dr)
{
    if (st<dr)
    {
        int m=(st+dr)/2,aux=v[st];
        v[st]=v[m];
        v[m]=aux;
        int i=st,j=dr,d=0;
        while (i<j)
        {
            if (v[i]>v[j])
            {
                aux=v[i];
                v[i]=v[j];
                v[j]=aux;
                d=1-d;
            }
            i+=d;
            j-=1-d;
        }
        quicks(v,st,i-1);
        quicks(v,i+1,dr);
    }
}*/
void mergs (int v[],int st,int dr)
{
    if (st<dr)
    {
        int m=(st+dr)/2;
        mergs(v,st,m);
        mergs(v,m+1,dr);
        int i=st,j=m+1,k=0;
        while (i<=m && j<=dr)
        {
            if (v[i]<v[j])
                tmp[++k]=v[i++];
            else tmp[++k]=v[j++];
        }
        while (i<=m)
            tmp[++k]=v[i++];
        while (j<=dr)
            tmp[++k]=v[j++];
        for (i=st,j=1; i<=dr; i++,j++)
            v[i]=tmp[j];
    }
}
int main()
{
    f>>n;
    for (int i=1; i<=n; i++)
    {
        f>>v[i];
    }
    mergs(v,1,n);
    for (int i=1; i<=n; i++)
    {
        g<<v[i]<<' ';
    }
    return 0;
}