The operations of search, insertion and deletion for a given string s can be made in O(m) where m is the length of s. Even though the preprocessing stage (insertion) could not be as efficient as it is ...

One of the interesting features of the 8086 back in 1978 was the provision for “string” instructions ... The instructions can work on 8-bit data or 16-bit data and oddly, as [Ken] points ...