我如何生成一个必须在两个其他给定日期之间的随机日期？
函数的签名应该是这样的:
random_date("1/1/2008 1:30 PM", "1/1/2009 4:50 AM", 0.34)
^ ^ ^
date generated has date generated has a random number
to be after this to be before this
并会返回如下日期: 2/4/2008 7:20 PM