Nothing
GCD=function(x,y,k=0){
if (y!=0){
k=k+1
GCD(y,x%%y,k)
}else{
result=list(k=k,g=x)
return(result)
}
}
Any scripts or data that you put into this service are public.
Add the following code to your website.
For more information on customizing the embed code, read Embedding Snippets.