看似简单的JSP功能，但是你却不一定能写出这样的代码。手动模拟sequence跑流水码的功能 不管是十进制还是十六进制 甚至是三十六进制都同样适用-JSP seemingly simple function, but you can not necessarily write such a code. Manual simulation of the function code sequence running water either decimal or hexadecimal hexade