| To: | "Khan, Sohail" <khan@cshl.edu> |
|---|---|
| Subject: | Re: reversing the order of strings |
| From: | Sundar Dorai-Raj <sundar.dorai-raj@pdf.com> |
| Date: | Fri, 16 Jun 2006 11:38:45 -0500 |
| Cc: | s-news@lists.biostat.wustl.edu |
| In-reply-to: | <C8696843AE995F4EA4CDC3E2B83482A901879041@mailbox02.cshl.edu> |
| Organization: | PDF Solutions, Inc. |
| References: | <C8696843AE995F4EA4CDC3E2B83482A901879041@mailbox02.cshl.edu> |
| User-agent: | Mozilla Thunderbird 1.0.2 (Windows/20050317) |
Khan, Sohail wrote: Dear List, I have character vector as follows: "abc" "ffd" "sad" How can I reverse the string so that "cba" "ffd" "das" Thanks.
Hi, Sohail,
Here's a one-liner:
> x <- c("abc", "ffd", "sad")
> sapply(lapply(x, function(x) rev(substring(x, 1:nchar(x),
1:nchar(x)))), paste, collapse = "")
[1] "cba" "dff" "das" HTH, --sundar |
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