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  1. or download this
    use strict;

...
}

print "@{ [ functional_FY( 1..10 ) ] }\n";
  2. or download this
    sub functional_FY {
  return @_ if @_ < 2;
  return ( splice( @_, rand @_, 1 ), &functional_FY );
}
  3. or download this
    sub functional_FY {
  return @_ < 2 ? @_ : ( splice( @_, rand @_, 1 ), &functional_FY );
}