Matlab: convert array of number to array of strings

An array of strings has to be a cell array. That said:

s = [12 25 34 466 55]
strtrim(cellstr(num2str(s'))')

Using arrayfun together with num2str would work:

>> A = [12 25 34 466 55]
A =
   12    25    34   466    55

>> arrayfun(@num2str, A, 'UniformOutput', false)
ans = 
    '12'    '25'    '34'    '466'    '55'

Now after MATLAB 2016b, you can simply use

s = [12 25 34 466 55]; 
string(s)