StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

PO
text
Body
copied!<p>After a little searching around I found a way to validate them. This doesn't neccersarily mean the FIN is valid, just that it falls within a valid range.</p> <p>I based it on algorithms from <a href="http://www.ngiam.net/NRIC/ppframe.htm" rel="nofollow noreferrer">http://www.ngiam.net/NRIC/ppframe.htm</a></p> <p>I've also included a similar method for checking NRIC because I figure anyone who comes across this and is interested in one is interested in the other as well.</p> <p>Hope this helps someone!</p> <pre><code> private static readonly int[] Multiples = { 2, 7, 6, 5, 4, 3, 2 }; public static bool IsNricValid(string nric) { if (string.IsNullOrEmpty(nric)) { return false; } // check length if (nric.Length != 9) { return false; } int total = 0 , count = 0 , numericNric; char first = nric[0] , last = nric[nric.Length - 1]; if (first != 'S' && first != 'T') { return false; } if (!int.TryParse(nric.Substring(1, nric.Length - 2), out numericNric)) { return false; } while (numericNric != 0) { total += numericNric % 10 * Multiples[Multiples.Length - (1 + count++)]; numericNric /= 10; } char[] outputs; if (first == 'S') { outputs = new char[] { 'J', 'Z', 'I', 'H', 'G', 'F', 'E', 'D', 'C', 'B', 'A' }; } else { outputs = new char[] { 'G', 'F', 'E', 'D', 'C', 'B', 'A', 'J', 'Z', 'I', 'H' }; } return last == outputs[total % 11]; } public static bool IsFinValid(string fin) { if (string.IsNullOrEmpty(fin)) { return false; } // check length if (fin.Length != 9) { return false; } int total = 0 , count = 0 , numericNric; char first = fin[0] , last = fin[fin.Length - 1]; if (first != 'F' && first != 'G') { return false; } if (!int.TryParse(fin.Substring(1, fin.Length - 2), out numericNric)) { return false; } while (numericNric != 0) { total += numericNric % 10 * Multiples[Multiples.Length - (1 + count++)]; numericNric /= 10; } char[] outputs; if (first == 'F') { outputs = new char[] { 'X', 'W', 'U', 'T', 'R', 'Q', 'P', 'N', 'M', 'L', 'K' }; } else { outputs = new char[] { 'R', 'Q', 'P', 'N', 'M', 'L', 'K', 'X', 'W', 'U', 'T' }; } return last == outputs[total % 11]; } </code></pre>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload