How can I sort these number?

a=[-4 4 -7 9 -2 -5 3 7] and I want to sort is as b=[ 9 7 -7 -5 4 -4 3 -2],

b=sort([a],'descend','ComparisonMethod','abs') does not work here as it short 7,-7 as -7,7.

Answer 1

[DGM]

Try this

a = [-4  4 -7 9 -2 -5 3 7];

b = sort(a,'descend');
[~,idx] = sort(abs(b),'descend');

b = b(idx)

b = 1×8

9 7 -7 -5 4 -4 3 -2