Given a list of integers and an integer k, return the kth largest element in the list. The kth largest is the kth element in sorted descending order, where 1st largest equals the maximum value. If k is less than 1 or greater than the list size, return null. If the list is null or empty, return null. Duplicate values count as separate positions.
Examples:
Input: numbers = [3, 2, 1, 5, 6, 4], k = 2
Output: 5
Explanation: Sorted descending: [6, 5, 4, 3, 2, 1], 2nd largest = 5
Input: numbers = [3, 2, 3, 1, 2, 4, 5, 5, 6], k = 4
Output: 4
Explanation: Sorted descending: [6, 5, 5, 4, 3, 3, 2, 2, 1], 4th largest = 4
Input: numbers = [1], k = 1
Output: 1
Explanation: Single element is the 1st largest
Input: numbers = [1, 2, 3], k = 0
Output: null
Explanation: k must be at least 1
Input: numbers = [1, 2, 3], k = 5
Output: null
Explanation: k exceeds list size
Input: numbers = null, k = 1
Output: null
Explanation: Null list returns null
Input: numbers = [], k = 1
Output: null
Explanation: Empty list returns null
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