Solved

perl, how to sort hash key in descending order

Posted on 2011-03-18
3
739 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
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 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

Enroll in May's Course of the Month

May’s Course of the Month is now available! Experts Exchange’s Premium Members and Team Accounts have access to a complimentary course each month as part of their membership—an extra way to increase training and boost professional development.

Question has a verified solution.

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

Suggested Solutions

A year or so back I was asked to have a play with MongoDB; within half an hour I had downloaded (http://www.mongodb.org/downloads),  installed and started the daemon, and had a console window open. After an hour or two of playing at the command …
In the distant past (last year) I hacked together a little toy that would allow a couple of Manager types to query, preview, and extract data from a number of MongoDB instances, to their tool of choice: Excel (http://dilbert.com/strips/comic/2007-08…
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…

751 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