How to neatly alternate between two different statements at different intervals

I'm struggling to figure out how I can use a for loop to execute two alternating statements at different intervals.

So in the interval ii=1:100, I want to execute one line of code when ii=[1:10, 21:30, 41:50, 61:70, 81:90] and the other line of code to execute when ii=[11:20, 31:40, 51:60, 71:80 91:100].

The best solution I've come up with is doing ten separate for loops one after the other... but I'm assuming this is the least efficient method to do this.

For context, the output here is an image being constantly changed from one state to another, back and forth, clearing the figure and showing the image at every interval.

Any help would be greatly appreciated - thank you!!

Answer 1

[dpb]

counter=0;
Limit=10;
for i=1:100
  counter=counter+1;
  if counter<=Limit
    disp('A')
  else
    disp('B')
    counter=0;
  end
end

[George Simmonds]

Thanks! This got me right on track with a few edits! Thanks for your help dpb

[dpb]

No problem, glad to help...sometimes we overthink things too much and miss the obvious.