Created
June 10, 2011 12:44
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Burgerservicenummer Elfproef Validator
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| /** Validate BSN according to http://nl.wikipedia.org/wiki/Burgerservicenummer */ | |
| private boolean isValidBSN(int candidate) { | |
| if (candidate <= 9999999 || candidate > 999999999) { | |
| return false; | |
| } | |
| int sum = -1 * candidate % 10; | |
| for (int multiplier = 2; candidate > 0; multiplier++) { | |
| int val = (candidate /= 10) % 10; | |
| sum += multiplier * val; | |
| } | |
| return sum != 0 && sum % 11 == 0; | |
| } |
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Interesting that you started with 100000000, because the first years (everyone that transferred from the old system) these numbers had 8 digits. Those numbers got a leading zero when the length of the number was increased to 9 digits.