heike2 发表于 2015-12-29 10:44:32

perl hash按照value排序打印

  #!/usr/bin/perl -w
  use strict;
  my %hash = ( a => 3, b => 1, c => 4);
  map{ print "$_ => $hash{$_}\n"}
  sort{ $hash{$b} <=> $hash{$a} } keys %hash;
  
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