Solved

Function or formula to identify the last repeated character in a cell in Excell

Posted on 2016-10-24
9
58 Views
Last Modified: 2016-10-24
We have a list of files in an excel and want to separate their file extension.  We are using a combination of commands like search(), len(), left(), right().  However some files has various periods in their name (for example, file.of.mine.txt), thus making it difficult to set the 3 character of the extension.  So we thought if we can identify the last period we can calculate the exact 3 or 2 or 5 extension that a file may have (for example, filename.text or filename.manifext).

please advice.
0
Comment
Question by:rayluvs
  • 3
  • 2
  • 2
  • +1
9 Comments
 
LVL 45

Expert Comment

by:aikimark
ID: 41857134
You can use instrrev() to find the last instance of a char/string within a target string.
Example:
strFilename = "file.of.mine.txt"
strBasename = Left(strFilename, Instrrev(strFilename, ".") -1)
strExtension = Mid(strFilename, Instrrev(strFilename, ".") +1)

Open in new window


Note: You can also get this information with a FileSystemObject
0
 
LVL 46

Expert Comment

by:Martin Liss
ID: 41857181
strExtension = Split("file.of.mine.txt", ".")(UBound(Split("file.of.mine.txt", ".")))
0
 
LVL 49

Accepted Solution

by:
Rgonzo1971 earned 500 total points
ID: 41857192
Hi,

pls try as a formula
=RIGHT(A1,LEN(A1)-SEARCH("@",SUBSTITUTE(A1,".","@",LEN(A1)-LEN(SUBSTITUTE(A1,".","")))))

Open in new window

Regards
0
Windows Server 2016: All you need to know

Learn about Hyper-V features that increase functionality and usability of Microsoft Windows Server 2016. Also, throughout this eBook, you’ll find some basic PowerShell examples that will help you leverage the scripts in your environments!

 

Author Comment

by:rayluvs
ID: 41857240
The formula worked excellently separating the extension, but how do modify the formula to identify the last repeated period (".")?
0
 
LVL 46

Expert Comment

by:Martin Liss
ID: 41857241
I don't understand. What do you mean by "identify"?
0
 

Author Comment

by:rayluvs
ID: 41857256
example,

in file.of.mine.txt, the last "." is in the 13 position.  We want to identify the last ".".
0
 
LVL 45

Expert Comment

by:aikimark
ID: 41857263
@rayluvs

Have you tested the other comments?
0
 
LVL 49

Assisted Solution

by:Rgonzo1971
Rgonzo1971 earned 500 total points
ID: 41857278
If you want the position of the last .
=SEARCH("@",SUBSTITUTE(A1,".","@",LEN(A1)-LEN(SUBSTITUTE(A1,".",""))))

Open in new window

0
 

Author Comment

by:rayluvs
ID: 41857289
The other comments don't work in the cell, we want work directly on Excel cell.

Thanx Rg worked!
0

Featured Post

ScreenConnect 6.0 Free Trial

Check out the updates in one game-changing release, ScreenConnect 6.0, based on partner feedback. New features include a redesigned UI that improves session organization and overall user experience. See the enhancements for yourself!

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

A little background as to how I came to I design this code: Around 5 years ago I designed an add-in that formatted Excel files to a corporate standard, applying different cell colours and font type depending on whether the cells contained inputs,…
This article will guide you to convert a grid from a picture into Excel format using Microsoft OneNote and no other 3rd party application.
This Micro Tutorial demonstrates how to create Excel charts: column, area, line, bar, and scatter charts. Formatting tips are provided as well.
This Micro Tutorial will demonstrate the scrolling table in Microsoft Excel using the INDEX function.

803 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question