Repeat actions?

 This is probably a terribly stupid ? to ask, but i cant seem to figure it out, and I just have that feeling it's very simple, but is there a function like do that repeats actions a given number of times? ive done:

Code: [Select]

for i in array #contains number of items = to times to repeat)
  #do action
end

but im wondering if there's a reserved word or another do to this.