How to find the maximum value of an matrix without using max function?

I need to find maximum value of a matrix but I cannot use max function so I need another way to do it?

[Amenson Joseph]

Amat=randi([-20,20],3,5); %3 x 5 matrix of random integers each in the range from -20 to 20

MatMax=Amat(1,1); %MatMax is the first element of Amat for now.

for k=1:length(Amat(:,1))

for m=1:length(Amat(1,:))

if(Amat(k,m)>MatMax)

MatMax=Amat(k,m);

end

end

end

Answer 1

[KSSV]

http://in.mathworks.com/matlabcentral/answers/109104-find-the-maximum-value-and-its-location-from-a-matrix-using-two-nested-loops