Write a function reformat_date which takes three strings as arguments representing a date, a current date format, and a target date format and returns a new string with the date formatted in the target format. For example, if we made the method call:

reformat_date("12/31/1998", "M/D/Y", "D/M/Y")

It should return the string "31/12/1998". In this example, the first argument represents a date and the second argument specifies this date is currently in the format Month/Day/Year (abbreviated "M/D/Y"). The third argument specifies that the method should return a new date in the format of Day/Month/Year format (abbreviated "D/M/Y").

A date string will be some non-empty string of numbers separated by / (e.g, "3/6/1995"). Note that the numbers between the /s can have any number of digits, but you may assume there is at least one digit for each part of the date provided.

The current and target formats will be some non-empty sequence of the characters 'D', 'M', 'Y' separated by /. You can assume the given date and the current format will match up (i.e., they will have the same number of /s) and that any date symbol that appears in the target format also appears in the current format (i.e., if the target format contains a 'Y' the current format will also contain a 'Y'). Below are some valid/invalid examples of current and target formats. You do not need to handle invalid formats. You may assume we will never pass you an example that is invalid.