MATLAB help

Write a function repvec that receives a ROW vector and the number of times each element is to be duplicated. The function should then return the resulting ROW vector. If the second input argument is 0(zero) then the function should return an empty vector

Some examples of calling the function:

>> repvec(5:-1:1,2)

ans = 5 5 4 4 3 3 2 2 1 1

>> repvec([0 1 0],3)

ans = 0 0 0 1 1 1 0 0 0

>> repvec(0,3)

ans = 0 0 0