The "Check for a Substring" algorithm is a method used to determine if a given substring exists within a larger string. It involves searching through the characters of the string to find an exact match with the substring.
In computer science, a string is simply a sequence of characters. It can be composed of letters, numbers, symbols, or any combination thereof.
Exact Match: An exact match refers to finding an identical copy or duplicate. In this context, it means finding the exact same sequence of characters from one string within another.