Cod sursa(job #1393594)

Utilizator j.loves_rockJessica Joanne Patrascu j.loves_rock Data 19 martie 2015 16:45:19
Problema Sortare prin comparare Scor 100
Compilator cpp Status done
Runda Arhiva educationala Marime 0.81 kb
#include <cstdio>

using namespace std;
int n,i,a[500005],b[500005];

void interclasare(int st,int mij,int dr)
{
    int i,j,k,t;
    for(i=st; i<=dr; ++i)
        b[i]=a[i];
    i=st;
    j=mij+1;
    k=st-1;
    while(i<=mij && j<=dr)
        if(b[i]<b[j]) a[++k]=b[i++];
        else a[++k]=b[j++];
    for(t=i; t<=mij; ++t) a[++k]=b[t];
    for(t=j; t<=dr; ++t) a[++k]=b[t];

}

void sort(int st,int dr)
{
    int mij;
    if(st!=dr)
    {
        mij=(st+dr)/2;
        sort(st,mij);
        sort(mij+1,dr);
        interclasare(st,mij,dr);
    }
}
int main()
{
    freopen("algsort.in","r",stdin);
    freopen("algsort.out","w",stdout);
    scanf("%d",&n);
    for(i=1; i<=n; ++i)
        scanf("%d",&a[i]);
    sort(1,n);
    for(i=1;i<=n;++i) printf("%d ",a[i]);
    return 0;
}