Help finding the min and max of a matrix without using min/max commands

I'm having trouble trying to find the min and max of this matrix. So far I can only get it to display the min which is -12, but it doesn't display the max at all, it just shows the entire matrix when I try to display the max. Any help is appreciated, thank you.

 mat2=[-1 0 2;7 -4 12;4 8.2 11;-11 0 -12];
n=size(mat2);
max=mat2;
min=mat2;
for i=1:1:n(1);
    for j=1:1:n(2);
        if(mat2(i,j)>max);
            max=mat2(i,j);
        else(mat2(i,j)<min);
            min=mat2(i,j);
        end
    end
end
max 
min

[John D'Errico]

For your own sake, NEVER define a variable named min or max, or other existing functions.

If you do, then your next question will be the urgent one, WHY DOES MY CODE THAT TRIES TO USE THE MAX FUNCTION NOT WORK?

Answer 1

[Roger Stafford]

Change the two lines

   max=mat2;
   min=mat2;

to

   max = -inf;
   min = inf;

Note: It is a poor practice to use the terms 'max' and 'min' for variable names, since those are the names for matlab functions.

Answer 2

[Andrei Bobrov]

mn = mat2(1);
mx = mat2(1);
for ii = 2:numel(mat2)
    if mat2(ii) < mn
        mn = mat2(ii);
        imn = ii;
    elseif mat2(ii) > mx
        mx = mat2(ii);
        imx = ii;
    end
end

without min and max :)

max1 = mat2(sum(bsxfun(@gt,mat2(:),mat2(:)'),2) == numel(mat2)-1);
min1 = mat2(sum(bsxfun(@lt,mat2(:),mat2(:)'),2) == numel(mat2)-1);

[ahmed yacine LARDJANE]

Hello,

could you please answer me here? https://fr.mathworks.com/matlabcentral/answers/669058-finding-min-and-max-of-an-element-without-using-builtin-function/