MATLAB: Create a string array (MxN) where each element is a repeated character based off a numeric array (MxN)

Question

I want to create a string array (MxN) of a repeated character. Each element of the string array has the character repeated based on a number in a numeric array (MxN).

For example, if I had a numeric array as such:

A =
     4     0
     1     8

And I wanted to repeat the "#" character, I want to create a string array like this:

B = 
  2×2 string array
    "####"    ""        
    "#"       "########"

The actual array I want to do this on is 7500×10 so other than a nested for-loop is there a more elegant way of getting my desired result?

Thanks

Carl

Answer 1

B = string(cellfun(@(x)repelem('#', x), num2cell(A), 'UniformOutput', false));