Hello Monks,

I need your help. I have an array containing sentences. I want to order the sentences according to a given word (i.e. the third from the left).

I am a nice boy You are a nice boy They are not good at all

What I found is the following (adapting it from Lingua::Concordancer):

sub order_line{  
    my @sorted_lines;
    foreach ( sort { _by_left( $a, $b ) } @lines ) { push @sorted_line
+s, $_ }
    print @sorted_lines;
}

sub _by_left {
    my ( $a, $b ) = @_;
    return lc( _on_left(  $a )) cmp lc( _on_left( $b )); 
    
}

sub _on_left {
    my ( $s ) = @_;
    my @words = split( /\s+/);
    my $word_level=3;
    return  $words[ scalar( @words ) - $word_level ];
}

[download]

Of course it doesn't work...

In reply to sort array by welle

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


  • Posts are HTML formatted. Put <p> </p> tags around your paragraphs. Put <code> </code> tags around your code and data!
  • Titles consisting of a single word are discouraged, and in most cases are disallowed outright.
  • Read Where should I post X? if you're not absolutely sure you're posting in the right place.
  • Please read these before you post! —
  • Posts may use any of the Perl Monks Approved HTML tags:
    a, abbr, b, big, blockquote, br, caption, center, col, colgroup, dd, del, details, div, dl, dt, em, font, h1, h2, h3, h4, h5, h6, hr, i, ins, li, ol, p, pre, readmore, small, span, spoiler, strike, strong, sub, summary, sup, table, tbody, td, tfoot, th, thead, tr, tt, u, ul, wbr
  • You may need to use entities for some characters, as follows. (Exception: Within code tags, you can put the characters literally.)
            For:     Use:
    & &amp;
    < &lt;
    > &gt;
    [ &#91;
    ] &#93;
  • Link using PerlMonks shortcuts! What shortcuts can I use for linking?
  • See Writeup Formatting Tips and other pages linked from there for more info.