Created
October 8, 2017 09:05
-
-
Save Shuumatsu/80d096831bd470d703f457cacf85cd1b to your computer and use it in GitHub Desktop.
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
| module ValidateCCNumbers where | |
| toDigits :: Integer -> [Int] | |
| toDigits 0 = [0] | |
| toDigits n | |
| | n > 0 = | |
| if a > 0 | |
| then toDigits a ++ [fromInteger b :: Int] | |
| else [fromInteger b :: Int] | |
| where | |
| a = n `div` 10 | |
| b = n `mod` 10 | |
| double :: [Int] -> [Int] | |
| double (first:second:rest) | |
| | doubledSecond >= 10 = first : doubledSecond - 9 : double rest | |
| | otherwise = first : doubledSecond : double rest | |
| where | |
| doubledSecond = second * 2 | |
| double xs = xs | |
| validate :: Integer -> Bool | |
| validate n = isValid $ sum $ double $ reverse $ toDigits n | |
| where | |
| isValid :: Int -> Bool | |
| isValid n = n `mod` 10 == 0 | |
| creditcards :: [Integer] | |
| creditcards = | |
| [ 4716347184862961 | |
| , 4532899082537349 | |
| , 4485429517622493 | |
| , 4320635998241421 | |
| , 4929778869082405 | |
| , 5256283618614517 | |
| , 5507514403575522 | |
| , 5191806267524120 | |
| , 5396452857080331 | |
| , 5567798501168013 | |
| , 6011798764103720 | |
| , 6011970953092861 | |
| , 6011486447384806 | |
| , 6011337752144550 | |
| , 6011442159205994 | |
| , 4916188093226163 | |
| , 4916699537435624 | |
| , 4024607115319476 | |
| , 4556945538735693 | |
| , 4532818294886666 | |
| , 5349308918130507 | |
| , 5156469512589415 | |
| , 5210896944802939 | |
| , 5442782486960998 | |
| , 5385907818416901 | |
| , 6011920409800508 | |
| , 6011978316213975 | |
| , 6011221666280064 | |
| , 6011285399268094 | |
| , 6011111757787451 | |
| , 4024007106747875 | |
| , 4916148692391990 | |
| , 4916918116659358 | |
| , 4024007109091313 | |
| , 4716815014741522 | |
| , 5370975221279675 | |
| , 5586822747605880 | |
| , 5446122675080587 | |
| , 5361718970369004 | |
| , 5543878863367027 | |
| , 6011996932510178 | |
| , 6011475323876084 | |
| , 6011358905586117 | |
| , 6011672107152563 | |
| , 6011660634944997 | |
| , 4532917110736356 | |
| , 4485548499291791 | |
| , 4532098581822262 | |
| , 4018626753711468 | |
| , 4454290525773941 | |
| , 5593710059099297 | |
| , 5275213041261476 | |
| , 5244162726358685 | |
| , 5583726743957726 | |
| , 5108718020905086 | |
| , 6011887079002610 | |
| , 6011119104045333 | |
| , 6011296087222376 | |
| , 6011183539053619 | |
| , 6011067418196187 | |
| , 4532462702719400 | |
| , 4420029044272063 | |
| , 4716494048062261 | |
| , 4916853817750471 | |
| , 4327554795485824 | |
| , 5138477489321723 | |
| , 5452898762612993 | |
| , 5246310677063212 | |
| , 5211257116158320 | |
| , 5230793016257272 | |
| , 6011265295282522 | |
| , 6011034443437754 | |
| , 6011582769987164 | |
| , 6011821695998586 | |
| , 6011420220198992 | |
| , 4716625186530516 | |
| , 4485290399115271 | |
| , 4556449305907296 | |
| , 4532036228186543 | |
| , 4916950537496300 | |
| , 5188481717181072 | |
| , 5535021441100707 | |
| , 5331217916806887 | |
| , 5212754109160056 | |
| , 5580039541241472 | |
| , 6011450326200252 | |
| , 6011141461689343 | |
| , 6011886911067144 | |
| , 6011835735645726 | |
| , 6011063209139742 | |
| , 379517444387209 | |
| , 377250784667541 | |
| , 347171902952673 | |
| , 379852678889749 | |
| , 345449316207827 | |
| , 349968440887576 | |
| , 347727987370269 | |
| , 370147776002793 | |
| , 374465794689268 | |
| , 340860752032008 | |
| , 349569393937707 | |
| , 379610201376008 | |
| , 346590844560212 | |
| , 376638943222680 | |
| , 378753384029375 | |
| , 348159548355291 | |
| , 345714137642682 | |
| , 347556554119626 | |
| , 370919740116903 | |
| , 375059255910682 | |
| , 373129538038460 | |
| , 346734548488728 | |
| , 370697814213115 | |
| , 377968192654740 | |
| , 379127496780069 | |
| , 375213257576161 | |
| , 379055805946370 | |
| , 345835454524671 | |
| , 377851536227201 | |
| , 345763240913232 | |
| ] |
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment