Pagini recente » Cod sursa (job #1315972) | Cod sursa (job #583607) | Cod sursa (job #1680278) | Cod sursa (job #1392261) | Cod sursa (job #2583480)
#include <iostream>
#include <fstream>
using namespace std;
ifstream in("algsort.in");
ofstream out("algsort.out");
int v[500005];
int b[500005],c[500005],n;
void uneste(int l,int m,int r)
{
// cout<<"Asa arata vectorul curent : ";
// for(int i = 1; i <= n; i++)
// cout<<v[i]<<" ";
// cout<<endl;
for(int i=l; i<=m; i++)
b[i]=v[i];
for(int i= m + 1; i<=r; i++)
c[i]=v[i];
// cout<<"Consideram intervalul [ "<<l<<" "<<r<<" ]"<<endl;
// cout<<"vectorul b : ";
// for(int i = l; i <= m; i++)
// cout<<b[i]<<" ";
// cout<<endl;
// cout<<"vectorul c : ";
// for(int i = m + 1; i <= r; i++)
// cout<<c[i]<<" ";
// cout<<endl;
int i=l,j=m + 1,k=l;
while(i <= m and j <= r)
{
if(b[i]<=c[j])
{
v[k++]=b[i];
i++;
}
else
{
v[k++]=c[j];
j++;
}
}
while(i<=m)
{
v[k++]=b[i];
i++;
}
while(j<=r)
{
v[k++]=c[j];
j++;
}
// cout<<"Vectorul sortat pe intervalul selectat : ";
// for(int i = l; i <= r; i++)
// cout<<v[i]<<" ";
// cout<<endl;
}
void mergesort(int ileft,int iright)
{
if(iright>ileft)
{
int m = ileft + (iright - ileft) / 2;
mergesort(ileft,m);
mergesort(m+1,iright);
uneste(ileft,m,iright);
}
}
int main()
{
in>>n;
for(int i=1; i<=n; i++)
in>>v[i];
mergesort(1,n);
for(int i=1; i<=n; i++)
out<<v[i]<<" ";
return 0;
}