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--
-- Perl Weekly Challenge 261
-- Task 2
-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-261>
--
CREATE SCHEMA IF NOT EXISTS pwc261;
CREATE OR REPLACE FUNCTION
pwc261.task2_plpgsql( s int, nums int[] )
RETURNS int
AS $CODE$
DECLARE
BEGIN
LOOP
PERFORM s
FROM unnest( nums ) n
WHERE n::int = s;
IF FOUND THEN
s := s * 2;
ELSE
RETURN s;
END IF;
END LOOP;
END
$CODE$
LANGUAGE plpgsql;
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