diff options
Diffstat (limited to 'samples/rosetta/luhn_test_of_credit_card_numbers.bruijn')
| -rw-r--r-- | samples/rosetta/luhn_test_of_credit_card_numbers.bruijn | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/samples/rosetta/luhn_test_of_credit_card_numbers.bruijn b/samples/rosetta/luhn_test_of_credit_card_numbers.bruijn new file mode 100644 index 0000000..e52011e --- /dev/null +++ b/samples/rosetta/luhn_test_of_credit_card_numbers.bruijn @@ -0,0 +1,14 @@ +:import std/Combinator . +:import std/Math . +:import std/List . + +luhn number→list → reverse → check → (\mod (+10)) → zero? + check y [[[[0 [[[6 \5 (4 + (5 odd even)) 1]]] 1]]]] k (+0) + odd 2 + even digit-sum (2 ⋅ (+2)) + +:test (luhn (+61789372994)) ([[1]]) +:test (luhn (+49927398716)) ([[1]]) +:test (luhn (+49927398717)) ([[0]]) +:test (luhn (+1234567812345678)) ([[0]]) +:test (luhn (+1234567812345670)) ([[1]]) |