Write recursive function nestingDepth(inList) that returns a number representing the "nesting depth" of the input list where nesting depth is

1) 0 if the list contains no lists as elements

2) one greater than the maximum of the nesting depths of all of the items that are lists.

Note: You may not use Python's max function for this problem. For example,

>>> nestingDepth([]) 0 >>> nestingDepth([1, 2, 'hello']) 0 >>> nestingDepth([1, 2, [[3]], 'hello', [4]]) 2