refer to https://en.wikipedia.org/wiki/Vampire_number
Given a number x, determine whether it is a pseudo-vampire number.
A pseudo-vampire number is similar to vampire numbers except -
- It can be of any length unlike the vampire numbers which have even no of digits.
- It can have n-number of fangs which need not to be of the same length unlike the vampire numbers which can have only two fangs.
- But the fangs must contain precisely all the digits of the original number.