How to create an algo for finding card numbers?

[Kk]

Hi All, I have been working on the luhn algorithm to validate the credit card. For that, I have used the below link query. The query is correct, but it is cannot validate the correct credit card numbers.Sometimes it will result the not valid cards too. Pls refer to this below link and help out to find the valid cards.

https://gosplunk.com/detect-credit-card-numbers-using-luhn-algorithm/

@ITWhisperer @aasabatini 

[ITWhisperer]

I am not an expert on Luhn calculations but this looks a little odd to me - for example, why are the digits reversed? Doesn't this give problems with even length series of digits?

[Kk]

According to luhn algo, we take even digits from front in a number. But we fail if this case in case of odd digits. So basically if we come from reverse end whether it may be odd or even the results will be perfect.

Anyway, I have figured out the solution and thx for the response👍.