About LHUN Algorithms

Question

What is LHUN Algorithm?
How to check the valid credited card using LHUN.

Ex:       1 2 5 4   - 1 2 3 4 - 1 2 3 4 - 1 2 5 4

            4 5 2 1 - 4 3 2 1 - 4 3 2 1 - 4 5 2 1

                  6     +       4      +     4   +     6

                              = 20

If(20/10==0)
It is a valid card Process?

Is that one is right justify how?

Vulpes · Answer

If you mean the Luhn algorithm (named after its inventor Hans Peter Luhn) then check out this article for details of how it works: http://en.wikipedia.org/wiki/Luhn_algorithm There's a link to a Luhn validation class written in C# at the foot of this article.