Solved

perl, how to sort hash key in descending order

Posted on 2011-03-18
3
704 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

Is Your Active Directory as Secure as You Think?

More than 75% of all records are compromised because of the loss or theft of a privileged credential. Experts have been exploring Active Directory infrastructure to identify key threats and establish best practices for keeping data safe. Attend this month’s webinar to learn more.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Remove Malware code from PHP file 6 74
perl rename 2 142
Removing file extension within a file. 4 91
Having a problem with ActiveState Perl on 64-bit Windows 7 3 68
On Microsoft Windows, if  when you click or type the name of a .pl file, you get an error "is not recognized as an internal or external command, operable program or batch file", then this means you do not have the .pl file extension associated with …
Checking the Alert Log in AWS RDS Oracle can be a pain through their user interface.  I made a script to download the Alert Log, look for errors, and email me the trace files.  In this article I'll describe what I did and share my script.
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…
Windows 10 is mostly good. However the one thing that annoys me is how many clicks you have to do to dial a VPN connection. You have to go to settings from the start menu, (2 clicks), Network and Internet (1 click), Click VPN (another click) then fi…

895 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

Need Help in Real-Time?

Connect with top rated Experts

13 Experts available now in Live!

Get 1:1 Help Now