Consider a variation of Sequential Search that scans a list to return the number of occurrences of a given search key in the list. Does its efficiency differ from the efficiency of classic Sequential Search? Explain.

Considering the fact that the sequential search key must go through the entire list, The search is no different from a classic sequential search.

Explanation:

Sequential search is a form of search in computer science that searches for an item by comparing sequentially items in an ordered list. In big O notation, it take the sequential search O(n) time, with n being the number of items in the list.

This is the same as searching for the occurrence of an item multiple times in the list, as it must go through the entire list items.