Task 1 plperl done

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diff --git a/challenge-215/luca-ferrari/postgresql/ch-1.plperl b/challenge-215/luca-ferrari/postgresql/ch-1.plperl
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+--
+-- Perl Weekly Challenge 215
+-- Task 1
+-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-215/>
+--
+
+CREATE SCHEMA IF NOT EXISTS pwc215;
+
+CREATE OR REPLACE FUNCTION
+pwc215.task1_plperl( text[] )
+RETURNS SETOF text
+AS $CODE$
+  my ( $words ) = @_;
+  for ( $words->@* ) {
+      return_next( $_ ) if ( $_ eq join( '', sort( split( //, $_ ) ) ) );
+  }
+
+return undef;
+$CODE$
+LANGUAGE plperl;