Luhn algorithm: Difference between revisions

Revision as of 11:50, 25 July 2024

Revision as of 23:58, 5 August 2024

Line 122:

=== [[C Sharp (programming language)|C#]] ===

<syntaxhighlight lang="c#" line="1">

bool IsValidLuhn(in int[] digits)

{

int check_digitcheckDigit = 0;

for (int i = digits.Length - 2; i >= 0; --i)

{

check_digit += ((i & 1) is 0) switch

{checkDigit +=

true => digits[(i] >& 41) ?== (digits[i] * 2 - 9 : digits[i].Length *& 2,1)

false = ? digits[i] > 4 ? digits[i] * 2 - 9 : digits[i] * 2

} : digits[i];

}

return (10 - (check_digitcheckDigit % 10)) % 10 == digits.Last()[^1];

}

</syntaxhighlight>