how to get the half max numbers after sorting in descending order

Hi, suppose i have a vector E containing values = [90 12 43 20 78 51 32 55], i use sort command to sort them in decending order, but now i want half of them means there are 8 values in the array and want to access only the 1st 4 maximum values separately and last 4 minimum values in a separate Array which are sorted descendingly ,how shall i access them?

Answer 1

[KSSV]

F = A(1:4) ;
S = F(5:end) ;

OR

A = [90 12 43 20 78 51 32 55] ;
A = sort(A) ;
iwant = reshape(A,[],2)' ;

[Maheen Fazal]

If no of values in the array vary with every execution, e.g in 1st we have 8, after we have 10 then 12 ?

[Maheen Fazal]

and then if we want to flag these maximum values and the minimum values separately??to use them further in any calculation?

[KSSV]

Try unique