What is the complexity of string matching algorithms?
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What is the complexity of string matching algorithms?
The complexity of string matching algorithms varies. For example, the naive approach has O(n*m) complexity, while algorithms like KMP and Rabin-Karp can achieve O(n + m) in the average case.
Can you explain the KMP algorithm?
Sure! The Knuth-Morris-Pratt (KMP) algorithm preprocesses the pattern to create a longest prefix-suffix (LPS) array, allowing it to skip unnecessary comparisons.
What are some real-world applications of string matching?
String matching is used in various applications like search engines, DNA sequencing, and plagiarism detection.
How does the Rabin-Karp algorithm work?
The Rabin-Karp algorithm uses hashing to find any one of a set of pattern strings in a text. It computes a hash value for the pattern and compares it with hash values of substrings in the text.
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