Check if cell contains specific letter

I'm wondering if it is possible to check if a string contains a certain letter.

I have an array with different strings and I would like to find every cell that contains a certain letter.

'hi'
'my'
'name'
'is'

How would I find the cells containing the letter i?

Answer 1

[Guillaume]

Many ways to do this:

c = {'hi'; 'my'; 'name'; 'is'}
lettertofind = 'i';

%method 1: plain character comparison
cellfun(@(s) any(s == lettertofind), c)

%method 2: strfind
cellfun(@(s) ~isempty(strfind(s, lettertofind)), c)

%method 3: ismember
cellfun(@(s) ismember(lettertofind, s), c)

%etc.

[Stephen23]

% regexp
~cellfun(@isempty,regexp(c,'i'))

% strcmp
~strcmp(strrep(c,'i','x'),c)