Forming matrix with string

How can I make function that forms a matrix with string? If string is 'idk' and number is 3 the output should be sth like this [idk,idk,idk;idk,idk,idk;idk,idk,idk], matrix of 'idk' with 3 rows and colums.

Answer 1

[Image Analyst]

% Make the 9 strings into a cell array:
ca = {'idk','idk','idk';'idk','idk','idk';'idk','idk','idk'}

You'll see:

ca =
  3×3 cell array
    {'idk'}    {'idk'}    {'idk'}
    {'idk'}    {'idk'}    {'idk'}
    {'idk'}    {'idk'}    {'idk'}

If the 3 is really a variable, and you want an actual function instead of a single line of code, then you can do it like this, using repmat():

function ca = MakeCellArray(numRows)
  % Make the 9 strings into a cell array:
  oneCell = {'idk'}; % Make just one for a start.
  % Turn it into a 3x3 array of cells
  ca = repmat(oneCell, [numRows, numRows])

Answer 2

[Walter Roberson]

function result = YourFunction
  result = repmat(string('ijk'), 3, 3);

This requires R2016b or later.