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RE: Word Counter

by merlyn (Sage)
on May 09, 2000 at 16:55 UTC ( [id://10746]=note: print w/replies, xml ) Need Help??


in reply to Word Counter

You wrote: 
perl -na0777e '%a = map {$_, ++$a{$_}} @F; print join("\n", (sort { $a
+{$b} <=> $a{$a} } keys %a)[0..9]), "\n"' <filename>

[download]
I don't like the %a = there. You're creating the hash inside the map, but then overwriting it with the values again. Messy messy. I'd stick with something like: 
perl -ne '$a{$_}++ for split; END { @a = sort { $a{$b} <=> $a{$a} } ke
+ys %a; print "$_\n" for @a[0..9]; }' <filename>

[download]

-- Randal L. Schwartz, Perl hacker

Replies are listed 'Best First'.
RE: RE: Word Counter
by chromatic (Archbishop) on May 09, 2000 at 20:18 UTC
    How about a round of golf, merlyn? perl -ne '$a{$_}++ for split; END { print join "\n", (sort { $a{$b} <=> $a{$a} } keys %a)[0 .. 9]; } <filename>
[reply]
[d/l]
      perl -lne '$a{$_}++ for split } print for (sort { $a{$b} <=> $a{$a} } keys %a)[0..9]; {' <filename> or even better: perl -lpe '$a{$_}++ for split } for ((sort { $a{$b} <=> $a{$a} } keys %a)[0..9]) {' <filename>
[reply]
[d/l]
[select]

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