目录php观察者模式（Observer Pattern）模式javascript结构实现步骤代码示例适用场景PHP观察者模式（Observer Pat开发者_开发入门tern）
I am implementing DES Encryption in Java with use of BigIntegers. I am left shifting binary keys with Java BigIntegers by doing the BigInteger.leftShift(int n) method. Key of N (Kn) is dependent on t
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