MATLAB: Padding Zeros to an Array

Question

Question 1

I have a vector of length 100. I want to add two zeros after each element, to create a new vector of length 300.

(b) Write the Matlab code to do this.

%Example

b=1:1:100;

%Adding 2 zeros after each element

j=1;

for i=1:1:length(b)

b_up(j)= b(i);

j=j+1;

b_up(j)=0;

j=j+1;

b_up(j)=0;

j=j+1;

end

Question 2

i got the output of b=1×300 double as required but I was wondering if there was an easier and faster method in padding 'n' zeros after each element?

Question 3

For example: Padding one zero after each element:

b_up = reshape([b; zeros(size(b))],1,[]);

Is there any way to modify the above code to pad 'n' zeros instead of one zero after each element?

Many thanks

Answer 1

n = 10; % an example
b_up = reshape([b; zeros(n, size(b,2))],1,[]);