Find Missing Numbers with Range Replace

Given a full range [start, end] of all integers and an unsorted list of integers numbers, find the missing integers within the range. Replace all sequences of three or more consecutive missing numbers with a "-". Example: Input: start = 1, end = 10, numbers = [1, 2, 4, 7, 8, 10] Output: [3, '5-6', 9] Constraints: Both start and end are integers, and end >= start numbers is a subset of the range [start, end] Numbers in numbers are unique and sorted in ascending order Example Input 1 10 6 1 2 4 7 8 10