MATLAB: Find indexes of strings that have special characters.

MATLABstring

I have column that consist of strings

eg.

 someString
 String
 otherString
 someString
 String

and I want to get idexes of strings that have word 'some' or 'other' inside it.

so the result of the function will be [1,3,4].

a = {'someString';'String';'otherString';'someString';'String'};
out = find(~cellfun('isempty',regexpi(a,'some|other')));

For #1 you could use isstrprop().

For #2, see startsWith(str, '_') and endsWith(str, '_')

For #3, you can use find():

indexes = strfind(str, '__');

For #4 you could do something like

if str(1) >= '0' && str(1) <= '9'
    % str starts with a numerical digit.
else
    % str does not start with a numerical digit.
end

 str  = 'night';
 list = cellstr([str(1:end-1); str(2:end)].')