How to trim down data in an array

Hi,

I have a column vector containing 1000 element.

I really need to reduce the size of the vector to 100 to be able to use it further in my program.

The reduced data must contain the first and last element of the original vector.

My current code is shown below. It does not capture the last element.

Thanks for your help.

    a = 1;
    b = 200;
    A = (b-a).*rand(1000,1) + a;
% 
tt = floor(length(A)/10);
    if tt == 0
        tt = 1;
    end
red_A = A(1:tt:end)
    
    

Answer 1

[Walter Roberson]

tt = floor(linspace(1,lenth(A),100));
red_A = A(tt) ;

[Telema Harry]

Thank you

Answer 2

[KSSV]

 a = 1;
b = 200;
A = (b-a).*rand(1000,1) + a;
x1 = 1:length(A) ; 
x2 = linspace(1,length(A),100) ;
Anew = interp1(x1,A,x2) ; 

[Telema Harry]

Thank you