How can I extract capital words from a string

Hello all My string is "a_PSTC_SSSA_MNG_epwcrrauut_A" I want to extract "a_PSTC_SSSA_MNG" Thanks in advance

[Rik]

Why is the initial a_ included? And why isn't the final _A included? What is the rule here?

Answer 1

[Mathieu NOE]

hello

this is one solution (for strings) . For char array it's almost the same (you don't even need to convert back from char to string as I did in the last line here)

str = "a_PSTC_SSSA_MNG_epwcrrauut_A" % input string 

str = "a_PSTC_SSSA_MNG_epwcrrauut_A"

ind = strfind(str,'_');
str = char(str);
str_out = string(str(1:ind(end-1)-1))   % output string 

str_out = "a_PSTC_SSSA_MNG"

Answer 2

[Image Analyst]

Try this:

s = "a_PSTC_SSSA_MNG_epwcrrauut_A_Extrastuff"

s = "a_PSTC_SSSA_MNG_epwcrrauut_A_Extrastuff"

words = strsplit(s, '_')

words = 1×7 string array
    "a"    "PSTC"    "SSSA"    "MNG"    "epwcrrauut"    "A"    "Extrastuff"

for k = 1 : numel(words)
    thisWord = words{k};
    capWord = upper(thisWord);
    if strcmp(thisWord, capWord)
        fprintf('The word %s is all capitals.\n', thisWord);
    elseif strcmp(thisWord(1), capWord(1))
        fprintf('The word %s has the first letter capitalized.\n', thisWord);
    else
        fprintf('The word %s is something else.\n', thisWord);
    end
end

The word a is something else.

The word PSTC is all capitals.
The word SSSA is all capitals.
The word MNG is all capitals.

The word epwcrrauut is something else.

The word A is all capitals.

The word Extrastuff has the first letter capitalized.