regexp to extract the last underscore and the following letter (last letter) from words

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I want to use regexp in order to extract only the last underscore and the last letter from the words below.
But if I have the words 'apple_c' and 'apple_man_man_h'
and I use regexp(words,'\_\w','split'),
then I get as a result 'apple' for both words, but it is wrong for me, because I want to extract onlythe last underscore and thr last letter, as I said.
The desired result for me is 'apple' and ''apple_man_man'.
How should i modify the command to achieve this?
Thank you

Accepted Answer

Mathieu NOE
Mathieu NOE on 15 Nov 2021
hello
I recognize I am not the regexp expert here , so I would suggest this alternative :
ind = findstr(words,'_');
word_out = words(1:ind(end)-1)
  3 Comments
Stephen23
Stephen23 on 15 Nov 2021
The behavior if there is no underscore might also be relevant:
words = 'apple';
ind = findstr(words,'_')
ind = []
word_out = words(1:ind(end)-1)
Array indices must be positive integers or logical values.
What is the desired output in this case?
Ioannis Vourvachakis
Ioannis Vourvachakis on 15 Nov 2021
Ηello Stephen, we talk about the case that all the words we study now contain an underscose and after the underscore follows the last letter of the word.

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