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Ingy döt Net 2024-10-16 18:07:41 -07:00
parent 81fd053722
commit 52a6ef48dd
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Task/Descending-primes/PascalABC.NET/descending-primes.pas Normal file
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##
uses School;
function DescendingSeq(n: integer): sequence of integer;
begin
if n = 0 then
for var x := 9 downto 1 do
yield sequence DescendingSeq(x) + x
else for var x := n*10 + n mod 10 - 1 downto n*10 + 1 do
yield sequence DescendingSeq(x) + x;
end;
DescendingSeq(0).Order.Where(n -> n.IsPrime).Print;