Find max of matrix without using built in function.
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I want to find the "max(a)" without actually using the built in "max" function.
2 Comments
Accepted Answer
Paulo Silva
on 4 May 2011
mx=a(1);
for p=2:numel(a)
if a(p)>mx
mx=a(p);
end
end
mx %the maximum value
3 Comments
Paulo Silva
on 4 May 2011
%code made here, not tested in matlab
mxc=zeros(1,size(a,2));
for n=1:size(a,2)
mx=a(1,n);
for p=2:size(a,1)
if a(p,n)>mx
mx=a(p,n);
end
end
mxc(n)=mx;
end
mxc %the maximum value per column
Paulo Silva
on 4 May 2011
The code isn't optimized on purpose, like Sean said "We won't do your homework for you"
More Answers (2)
Adrien Leygue
on 4 May 2011
The following code will extract the minimum over each column. No loop no max no min and of course not optimal. Feel free to adapt it to other purposes:
S = A((repmat(eye(size(A,1)),[1 size(A,1)]) *(kron(A,ones(size(A,1),1)) < kron(ones(size(A,1),1),A)))==0)'
A.
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