MATLAB: To find maximum value of any matrix without using built-in max()

for looploopMATLABpracticequestion

 function [max_value, index] = mymax(x)
  [r,c]=size(x);
max_value_row=x(1,1)
max_value_col=x(1,1)
for i=1:c
    if x(1,i)>max_value_row
        max_value_row=x(i,1);
    end
    for k=1:r
        if x(k,1)>max_value_col
            max_value_col=x(k,1);
        end
    end
end
        if max_value_row > max_value_col
            max_value = max_value_row
        else
            max_value = max_value_col
            index = find(max_value)
        end
THis is what i have tried so far but the value found is wrong, please help me

Best Answer

function [val,idx] = mymax(arr)
val = arr(1);
idx = 1;  
for k = 2:numel(arr)
    if arr(k)>val
        val = arr(k);
        idx = k;
    end
end
This return the linear index, which is more useful than the subscript index.
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