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Ingy döt Net 2026-02-01 16:33:20 -08:00
parent 5150844a7d
commit 4bb20c9b71
7735 changed files with 38060 additions and 199180 deletions
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25
Task/Damm-algorithm/PowerShell/damm-algorithm.psh
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@ -1,25 +0,0 @@
$table = (
(0, 3, 1, 7, 5, 9, 8, 6, 4, 2),
(7, 0, 9, 2, 1, 5, 4, 8, 6, 3),
(4, 2, 0, 6, 8, 7, 1, 3, 5, 9),
(1, 7, 5, 0, 9, 8, 3, 4, 2, 6),
(6, 1, 2, 3, 0, 4, 5, 9, 7, 8),
(3, 6, 7, 4, 2, 0, 9, 5, 8, 1),
(5, 8, 6, 9, 7, 2, 0, 1, 3, 4),
(8, 9, 4, 5, 3, 6, 2, 0, 1, 7),
(9, 4, 3, 8, 6, 1, 7, 2, 0, 5),
(2, 5, 8, 1, 4, 3, 6, 7, 9, 0)
)
function Test-Damm([string]$s) {
$interim = 0
foreach ($c in $s.ToCharArray()) {
$interim = $table[$interim][[int]$c - [int][char]'0']
}
return $interim -eq 0
}
foreach ($number in 5724, 5727, 112946, 112949) {
$validity = if (Test-Damm $number) {'valid'} else {'invalid'}
'{0,6} is {1}' -f $number, $validity
}