Cod sursa(job #1801555)

Utilizator OlivianOlivian Dan Cretu Olivian Data 9 noiembrie 2016 10:33:06
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.74 kb
#include <cstdio>
using namespace std;
int v[500007],v1[500007],n;
void msort(int st,int dr)
{
    if(st>=dr) return;
    int mid=(st+dr)/2;
    msort(st,mid);
    msort(mid+1,dr);
    int nr=0;
    for(int i=st,j=mid+1;i<=mid || j<=dr;)
    {
        if(i<=mid && j<=dr)
        {
            if(v[i]<v[j]) v1[++nr]=v[i++];
            else v1[++nr]=v[j++];
        }
        else if(i<=mid) v1[++nr]=v[i++];
        else v1[++nr]=v[j++];
    }
    for(int i=1;i<=nr;i++) v[st+i-1]=v1[i];
}

int main()
{
    freopen("algsort.in", "r", stdin);
    freopen("algsort.out", "w", stdout);
    scanf("%d",&n);
    for(int i=1;i<=n;i++) scanf("%d",&v[i]);
    msort(1,n);
    for(int i=1;i<=n;i++) printf("%d ",v[i]);
    return 0;
}