Solved

perl, how to sort hash key in descending order

Posted on 2011-03-18
3
728 Views
Last Modified: 2012-08-13
$hash{"v1"} = "11";
$hash{"v2"} = "22";
$hash{"v4"} = "44";
$hash{"v3"} = "33";

How do I sort the hash by the key in descending order?
0
Comment
Question by:rgbcof
  • 2
3 Comments
 
LVL 84

Accepted Solution

by:
ozo earned 250 total points
ID: 35169892
reverse sort keys %hash
0
 
LVL 84

Expert Comment

by:ozo
ID: 35169895
print "\$hash{\"$_\"} = \"$hash{$_}\"\n" for sort {$b cmp $a} keys %hash;
0
 

Author Closing Comment

by:rgbcof
ID: 35170081
Both ways work.  Thanks Ozo.
0

Featured Post

Free Tool: ZipGrep

ZipGrep is a utility that can list and search zip (.war, .ear, .jar, etc) archives for text patterns, without the need to extract the archive's contents.

One of a set of tools we're offering as a way to say thank you for being a part of the community.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
pattern matching in perl 2 111
perl split by | 2 108
pipe to sed or perl, please help 5 135
Perl regex to replace any capital letters not preceded by ">" 6 159
I've just discovered very important differences between Windows an Unix formats in Perl,at least 5.xx.. MOST IMPORTANT: Use Unix file format while saving Your script. otherwise it will have ^M s or smth likely weird in the EOL, Then DO NOT use m…
Email validation in proper way is  very important validation required in any web pages. This code is self explainable except that Regular Expression which I used for pattern matching. I originally published as a thread on my website : http://www…
Explain concepts important to validation of email addresses with regular expressions. Applies to most languages/tools that uses regular expressions. Consider email address RFCs: Look at HTML5 form input element (with type=email) regex pattern: T…

680 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