Write a method that returns 'num' but with its least-significant digit moved to the front of the number. For example, if 'num' was 12345 you would return 51234 so the 5 was moved to the front. As a pre-condition, you may assume that 'num' is positive. If 'num' has a zero in its least-significant digit, that zero becomes a leading zero, but since you are returning an integer, it will not appear. For example, if 'num' is 74000 you will return 7400. This may sound easy so far, but here is the kicker: You may NOT use arrays or strings in any way.