#算法
校验信用卡号码用到的Luhn 算法，我试了一下中国的信用卡用的也是算法。
图片里的第二步“add the digits of the product(e.g. 1+6=7)”，也可以这么做：如果第一步得到的数大于9，说明是一个二位数，这时候需要减去9重新变成一位数。
BY codedump的电报频道
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However, analysts are positive on the stock now. “We have seen a huge downside movement in the stock due to the central electricity regulatory commission’s (CERC) order that seems to be negative from 2014-15 onwards but we cannot take a linear negative view on the stock and further downside movement on the stock is unlikely. Currently stock is underpriced. Investors can bet on it for a longer horizon," said Vivek Gupta, director research at CapitalVia Global Research.
codedump的电报频道 from sa