I want to return back to a certain loop

I have 3 for loops(not nested for loops) and i want to check on the output coming from the third for loop and if it didn't satisfy a certain condition i want it to loop on the 3 loops again till it reaches an optimum solution! so can anyone help me please?

Answer 1

[Image Analyst]

Try something like this

again = true
loopCounter = 1
maxIterations = 1000 % Whatever, to prevent infinite loop
while again && loopCounter  <= maxIterations 
  for k1 = 1 : k1Max
    % Code
  end
  for k2 = 1 : k2Max
    % Code
  end
  for k3 = 1 : k3Max
    % Code to set some condition
  end
  if yourCondition == successCriteria
     again = false;    
  end
  loopCounter = loopCounter + 1; % Increment loop counter
end

[Image Analyst]

Not sure why you tagged this "recursion" I don't think a solution involves any code calling itself.

[Steven Lord]

My guess is Fangjun tagged it 'recursion' based on the approach used by the other Answer currently available for this question.

[Image Analyst]

Oh, I see now. That wasn't there when I put my responses in.

[Fangjun Jiang]

No. I didn't tag anything and I never saw it. A recursive function is the first thing came to my mind when I read the question.

Answer 2

[Fangjun Jiang]

There is no "goto" statement in MATLAB if that is what you are looking for. I think your task could be solved with a recursive function. There is nothing special in MATLAB regarding recursive function. Just search for "recursive function" or "recursive function example" on the web.

function out=MyFun(input)
% do loop 1
% do loop 2
% do loop 3
if out==GOOD
   return;
else
   out=MyFun(input); % could use modified input if needed
end