Beefy Boxes and Bandwidth Generously Provided by pair Networks
XP is just a number
 
PerlMonks  

comment on

( [id://3333]=superdoc: print w/replies, xml ) Need Help??
Be well,
rir
#!/usr/bin/perl use strict; use warnings; use Data::Dumper; my $h = { 4 => -1, 2 => 6, 6 => 4, 3 => 5, 5 => -1, 99 => -1 }; sub LEAF() { -1 } # Make a list of toplevel keys: values occurring once and not LEAF my %tl; ++$tl{$_} for grep { $_ != LEAF } %$h ; my @toplevel = grep { $tl{$_} == 1 } keys %tl; # Build linked lists from head as HoHo... my %answer = (); for my $k ( @toplevel ) { my $cursor = \%answer; $cursor->{$k} = $h->{$k}; while ( LEAF != ( my $next_k = $cursor->{$k}) ) { $cursor = $cursor->{$k} = { $next_k, $h->{ $next_k } }; $k = $next_k; } } print Dumper \%answer;

In reply to Re: How to get a ideal hash by rir
in thread How to get a ideal hash by pysome

Title:
Use:  <p> text here (a paragraph) </p>
and:  <code> code here </code>
to format your post; it's "PerlMonks-approved HTML":



  • Are you posting in the right place? Check out Where do I post X? to know for sure.
  • Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
    <code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
  • Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
  • Want more info? How to link or How to display code and escape characters are good places to start.
Log In?
Username:
Password:

What's my password?
Create A New User
Domain Nodelet?
Chatterbox?
and the web crawler heard nothing...

How do I use this?Last hourOther CB clients
Other Users?
Others taking refuge in the Monastery: (4)
As of 2024-03-29 01:42 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    No recent polls found