MATLAB: Wont it output index

max

function[max,index]=MyMax(x)
max=0;
[n,m]=size(x);
for i=1:m
if max<x(i)
max=x(i);
index=i;
output = [max, index];
end
end
end

Best Answer

Hi,
You have done everything correctly except for a couple of minor flaws. Here is the corrected code:
function output = MyMax(x)
     
      MAX=0;  % It is better to avoid MATLAB's function names, such as, max, min, etc to name variables
      [n, m]=size(x);
      for i=1:m
       if MAX<x(i)
       MAX=x(i);
       index=i;
       output = [MAX, index];
     end
   end
   
end
This can be tested:
>> x=linspace(-pi,pi);
>> OUT = MyMax(x)
OUT =
   1.0e+02 *
   0.031415926535898   1.000000000000000
Note that the easy solution of your exercise is this simple command:
   [MAX_VAL, INDEX] = max(x)
Good luck.
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