Luhn test of credit card numbers: Difference between revisions
Added Arturo implementation
Simple9371 (talk | contribs) m (→{{header|Batch File}}: added good practice) |
Drkameleon (talk | contribs) (Added Arturo implementation) |
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.asciz "1234567812345678"
.asciz "1234567812345670" </lang>
=={{header|Arturo}}==
<lang rebol>; by @Krenium
digits: function [n][
res: new []
while -> n > 0 [
'res ++ n % 10
n: n / 10
]
res
]
luhn?: function [n][
s1: new 0
s2: new 0
loop.with: 'i digits n 'd [
if? even? i -> 's1 + d
else [
'd * 2
if d > 9 -> 'd - 9
's2 + d
]
]
zero? (s1 + s2) % 10
]
print luhn? 49927398716
print luhn? 49927398717
print luhn? 1234567812345678
print luhn? 1234567812345670
</lang>
{{out}}
<pre>true
false
false
true</pre>
=={{header|AutoHotkey}}==
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