This one maintains 2 levels of Key order: 
my @a=map {  my $x=$_;[map { $HoH{$x}{$_} } sort keys %{$HoH{$x}} ]  }
+ sort keys %HoH;

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Update: Just noticed that choroba beat me to the same solution.

             My goal ... to kill off the slow brain cells that are holding me back from synergizing my knowledge of vertically integrated mobile platforms in local cloud-based content management system datafication.

In reply to Re: Convert hash into an array based matrix by NetWallah
in thread Convert hash into an array based matrix by madM

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