这是一个十六进制与字符串相互快速转换的源码，可以拿来学习-This is a string of sixteen with the rapid conversion of the source code, can be used to learn

一组转换函数用于十六进制字符串二进制字符串八进制字符串到十进制整数相互转换(A set of transition function for hexadecimal string octal binary string string to a decimal integer transform each other)