How to find and replace nth character from last in notepad++

[Reena D]

Below is Original

AI 2015
Adu 2020
Ajji 2017
Akam 2011
Alai 2003

I want ot Replace the Space before the Year with TAB like Below,

AI 2015
Adu 2020
Ajji 2017
Akam 2011
Alai 2003

So i want to replace the 5th Charrecter from last… Any Help ?

[David Shaked]

Try a regular expression (regex) replacement. For example:

1. On the menu, click Search > Replace.

2. Select the Regular Expression option.

3. In the Find What box, enter:
   \s([0-9]{4}\R)
   This expression finds a space character, followed by a sub-expression containing four instances of a digit 0-9 and a newline.

4. In the Replace With box, enter:
   \t($1)
   This expression replaces the found string with a tab character, followed by the Find What sub-expression.

5. Click the Replace All button.

Vary the regex syntax according to the precise requirements of your file. For a detailed explanation of the syntax, see:
https://npp-user-manual.org/docs/searching/
https://www.boost.org/doc/libs/1_70_0/libs/regex/doc/html/boost_regex/syntax/perl_syntax.html

[Reena D]

Wow…
Worked Perfectly…

Thank you Verymuch…