July 2018
Beginner
202 pages
5h 4m
English
Content preview from Beginning Java Data Structures and Algorithms
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Applying the Rabin-Karp Algorithm
The aim here is to develop a code in Java for implementing the Rabin-Karp algorithm for matching a string from a set of alphabetical characters that have decimal digits.
Perform the following steps:
- Convert the text and pattern strings into digits.
- Use if and for loops to calculate the number of matching characters.
- Put everything together to implement the Rabin-Karp algorithm. The following Snippet 5.9 shows the pre-compute part of the algorithm:
long q = BigInteger.probablePrime(31, new Random()).longValue();// Precompute d^(m-1) % q for use when removing leading digitlong dm = 1;for (int i = 1; i <= m - 1; i++) dm = (d * dm) % q;// Precompute p and t0long ph = 0;long th = 0;for (int i = 0; i < m; i++) ...Become an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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