length of multiple vectors

I am new with Matlab and english it is not my first language, so please have me patience.

I want to know the length of 40 vectors (i created them with a loop and their names are A1, A2, ... , A40). I was thinking of using the command "for" but the problem is that i dont know how can i call 1 vector in each iteration.

Answer 1

[Walter Roberson]

http://matlab.wikia.com/wiki/FAQ#How_can_I_create_variables_A1.2C_A2.2C....2CA10_in_a_loop.3F

Answer 2

[evil_silla]

?

[Walter Roberson]

Do not create your variables that way.

Instead of assigning to A10, assign to A{10}. Then when you want to loop over the vectors,

for K = 1 : length(A)
  current_vector = A{K};
  ... work with current vector
end