For loop execution problem in matlab

Hi everyone, i want to do this, like for i=1:10, this function changes 0 to 1 on every first 10 loop iteration which is working in this program, but when the 11 iteration executes then the first 1 in the array changes back to 0 and when the 20th iteration executes i again get all the values equal to 0. Thank you.

clear all;
clc;

A = zeros(1,10);

for i = 1:20

if i<=length(A)
    A(i) = 1;
elseif i>length(A)             %%%this statement doesn't work
      A(i) = 0;  
end
end

Answer 1

[José-Luis]

A = zeros(1,10);
for ii = 1:20
    if i<=length(A)
       A(ii) = 1;
    elseif i>length(A)             
        A(ii) = 0;
        A(ii - 10) = 0;   
    end
end

[Aftab Ahmed Khan]

Hi Jose, Thanks. Just to let you know that this is also a part of my yesterday question which i managed to solve somehow, thanks to you guys as well.

[José-Luis]

My pleasure.