Find the most occurring element and its frequency in an array.

You can solve this by counting occurrences with a dictionary (hash map). Iterate through the array, increment counts, then find the key with the maximum value. Complexity is O(n) time and O(k) space, where k is the number of distinct elements.

from collections import Counter

def mode_and_count(arr):
    if not arr:
        return None, 0
    counts = Counter(arr)
    mode, freq = counts.most_common(1)[0]
    return mode, freq

# Example
print(mode_and_count([1, 2, 2, 3, 3, 3]))  # Output: (3, 3)

This code handles empty arrays and returns the element with the highest frequency along with its count.