How to repeat indivisual element of a matrix?

Suppose, i have a matrix a=[1 0 1 1 0 0 1 1] and i want to repeat every element of this matrix by 3 times using for loop . as the new matrix will be b=[1 1 1 0 0 0 1 1 1 1 1 1 0 0 0 0 0 0 1 1 1 1 1 1] . How easily can solve??

Answer 1

[Rene Riha]

for i=1:length(a)

b(3*i-2:3*i)=a(i);

end

[Saiem Solimullah]

Thank you... this is helpful..

[Saiem Solimullah]

mam, can u help me with the rebuilt of vector a using for loop please?

Answer 2

[Steven Lord]

Use the repelem function introduced in release R2015a.