Splitting a sentence into an array of letters

I'm new to MATLAB. I would like to learn how to convert or split a string (maybe a sentence or a passange) to an array of letters. For example:

I have a string of 'I am happy'

I want my end result of my array to be [ 'I' ' ' 'a' 'm' ' ' 'h' 'a' 'p' 'p' 'y' '.']

How can I do that? Thank you for all your advice and help.

[Stephen23]

Because square brackets are a concatenation operator, your two examples are equivalent (apart from the dot at the end, which appears out of nowhere):

A = 'I am happy' % I have a string of

A = 'I am happy'

B = [ 'I' ' ' 'a' 'm' ' ' 'h' 'a' 'p' 'p' 'y' '.'] % I want my end result of my array to be

B = 'I am happy.'

[Ben Nguyen]

My apologies, there would be no dot at the end of the array.

My goal is to break a string into each element or letter and strore them in a array.

Answer 1

[Chunru]

str = 'I am happy'              % characar array

str = 'I am happy'

% the char array str is stored as [ 'I' ' ' 'a' 'm' ' ' 'h' 'a' 'p' 'p' 'y'
% '.'] internaly.  It only display as 'I am happy' for compactness.
%
% You can get the individual character
str(3)

ans = 'a'

% if you transpose str, it is a column vector of characters
str'

ans = 10×1 char array
    'I'
    ' '
    'a'
    'm'
    ' '
    'h'
    'a'
    'p'
    'p'
    'y'

[chrisw23]

A string pattern example.

str = "I am happy !"

str = "I am happy !"

str.extract(alphanumericsPattern(1) | whitespacePattern | characterListPattern("!"))

ans = 12×1 string array
    "I"
    " "
    "a"
    "m"
    " "
    "h"
    "a"
    "p"
    "p"
    "y"
    " "
    "!"

Pattern

[Chunru]

str = "I am happy !"

str = "I am happy !"

ch = char(str)'

ch = 12×1 char array
    'I'
    ' '
    'a'
    'm'
    ' '
    'h'
    'a'
    'p'
    'p'
    'y'
    ' '
    '!'

[Ben Nguyen]

This should work. Thank you !