What is the best way of doing repeating tasks?

By best, I mean fast.

What I mean is this:

For example, I have 50 stored integers somewhere in my memory. I need to add a certain number to all of them.

In QBasic it might look like:

for i=0 to 199
integers(i)=integers(i)+10
next

There is no way of doing this in one instruction as far as I know in assembly.

One way:
mov [var],199
label1:
;code
mov di,[var]
add [es:di],10;something like this

sub [var],1 ;or maybe dec instruction more approiate
cmp [var],0
jne label1

there is also loop where i can do

mov cx,199
label1:

mov di,cx
push cx;I might need cx

add [es:di],10
pop cx

loop label1


and I think there are other options which I'm still not aware of.

So what is the best option here?

And those that use cx will have me push cx and that will add more instrucitons and slow it down.



Ben