Explanation
- The **Rabin-Karp Algorithm** is a string searching algorithm used to find a pattern within a larger text. It uses a **hashing** technique to perform efficient string matching. The idea behind Rabin-Karp is to compare the hash values of the pattern and substrings of the text. If the hash values match, we then perform an **actual string comparison** to check for a real match.
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Steps:
- Compute the hash of the pattern and the first window of the text.
- Compare the hash of each substring in the text with the hash of the pattern.
- If the hashes match, compare the actual strings of the pattern and the substring.
- Repeat the process for all possible windows in the text.
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Time Complexity:
- The worst-case time complexity is O(n*m), where n is the size of the text and m is the size of the pattern.
- The average-case time complexity is O(n + m), provided hashing is done efficiently.