MATLAB: For loop or while loop? help please

for loopMATLAB

Dear sir,
I have a simple code
for k=1:3
    for i=1:7
do something
    end
end
If k=1 I would like the loop to execute the body from i= 1 to 7 if k=2 or k=3 I would like the loop to execute the body from i = 1 to 6.
How can I do that please? I don't want to repeat the body in the if condition. Thank you very much
Kind Regards
S

Best Answer

m=7
for k=1:3
if k>1
   m=6
end
for i=1:m
   do something
end
end
%or
for k=1:3
   for i=1:7-(k~=1)
      %do
  end
end
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