Write a method that takes 2 parameters: an ArrayList<String> list, and an int numRepeats representing the number of times to repeat each element in the array.

Return a new ArrayList with each element repeated numRepeats times.

For example, if we had an ArrayList<String> list with the values [“hello”, “world”]:

repeatElements(list, 3)

Should return a new ArrayList with the elements:

["hello", "hello", "hello", "world", "world", "world"]