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zhuangya/id.coffee

Created March 26, 2012 05:35
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ID card verify
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id.coffee
verify = (idcard) ->
factor = [7, 9, 10, 5, 8, 4, 2, 1, 6, 3, 7, 9, 10, 5, 8, 4, 2]
mask = [1, 0, 'X', 9, 8, 7, 6, 5, 4, 3, 2]
idcard[idcard.length - 1] is mask[((x * factor[i] for x, i in idcard[0...idcard.length - 1]).reduce (x, y) -> x + y) % mask.length].toString()
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