Question

What is the time complexity of string matching algo by harspool?

Answer 1

e bad-character shift used in the Boyer-Moore algorithm (see chapter Boyer-Moore algorithm) is not very efficient for small alphabets, but when the alphabet is large compared with the length of the pattern, as it is often the case with the ASCII table and ordinary searches made under a text editor, it becomes very useful.
Using it alone produces a very efficient algorithm in practice. Horspool proposed to use only the bad-character shift of the rightmost character of the window to compute the shifts in the Boyer-Moore algorithm.

The preprocessing phase is in O(m+)time and O() space complexity.

The searching phase has a quadratic worst case but it can be proved that the average number of comparisons for one text character is between 1/and 2/(+1).

Answer 2

Explanation:

Primitive data types are predefined types of data, which are supported by the programming language. For example, integer, character, and string are all primitive data types. ... In the Java programming language, non-primitive data types are simply called "objects" because they are created, rather than predefined