Leetcode MoveZeroes Java solution

Move Zeroes is the eighth task in the Arrays section in the 'Top Interview Questions' section on Leetcode. The aim is to move all zeroes in an array to the end, keeping the other numbers in the same sequence at the start. The challenge is to do this in the fewest number of operations.

This takes me two attempts. I explain how I will do it and then get on with it, eventually submitting my solution to Leetcode and checking the results.