xevion/exercism
1
0
Fork 0
mirror of https://github.com/Xevion/exercism.git synced 2025-12-10 10:07:14 -06:00
Code Issues Packages Projects Releases Wiki Activity

luhn exercise numeric check edit

Browse Source
This commit is contained in:
Xevion
2019-07-13 21:56:38 -05:00
parent 6c5c3f3d74
commit 58551699d2
1 changed files with 5 additions and 2 deletions
Download Patch File Download Diff File Expand all files Collapse all files

7
python/luhn/luhn.py
View File

@@ -1,8 +1,11 @@
class Luhn(object): class Luhn(object):
def __init__(self, card_num): def __init__(self, card_num):
self.card_num = ''.join(filter(lambda x : x in '0123456789', card_num)) self.card_num = card_num
def valid(self): def valid(self):
temp = [int(num[1]) * 2 if (num[0]+1) % 2 == 0 else int(num[1]) for num in enumerate(self.card_num[::-1])] if len(self.card_num) < 2 or not self.card_num.isnumeric():
return False
temp = ''.join(filter(lambda x : x in '0123456789', self.card_num))
temp = [int(num[1]) * 2 if (num[0]+1) % 2 == 0 else int(num[1]) for num in enumerate(temp[::-1])]
temp = [num - 9 if num > 9 else num for num in temp] temp = [num - 9 if num > 9 else num for num in temp]
return sum(temp) % 10 == 0 return sum(temp) % 10 == 0