How to arrange indices of matrix A by descending order ?

if I have

A=[25,41,38] when I sort this matrix by descending order , I will get A=[41,38,21]

I want to arrange indices of matrix A by descending order and shows a result (B) like this

B=[2,3,1]

How to create program to get this result ?

Thanks in advance.

Answer 1

[Star Strider]

To get ‘B’, ask for the second output from sort:

A=[25,41,38];
[A_sorted,B] = sort(A, 'descend')

A_sorted =
    41    38    25

B =
     2     3     1

[Pradya Panyainkaew]

Thank you very much.

[Star Strider]

As always, my pleasure.