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--
-- Perl Weekly Challenge 326
-- Task 2
-- See <https://perlweeklychallenge.org/blog/perl-weekly-challenge-326>
--
CREATE SCHEMA IF NOT EXISTS pwc326;
CREATE OR REPLACE FUNCTION
pwc326.task2_plpgsql( nums int[] )
RETURNS SETOF int
AS $CODE$
DECLARE
i int;
base int;
times int;
BEGIN
FOR i IN 1 .. array_length( nums, 1 ) - 1 LOOP
IF mod( i, 2 ) = 0 THEN
CONTINUE;
END IF;
base := nums[ i ];
times := nums[ i + 1 ];
FOR j in 1 .. times LOOP
RETURN NEXT base;
END LOOP;
END LOOP;
RETURN;
END
$CODE$
LANGUAGE plpgsql;
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