STRING ALGORITHMS
STRING ALGORITHMS
Strings are considered a data type in general and are typically represented as arrays of bytes (or words) that store a sequence of characters. Strings are defined as an array of characters.
Introduction to String Algorithms
Introduction to String Algorithms
String Matching Algorithms
String matching algorithms are computational techniques used to find patterns within a larger string or text. These methods are essential to many applications, including bioinformatics, text processing, data mining, and...
Rabin-Karp String Matching Algorithm
Rabin-Karp String Matching Algorithm
The Rabin-Karp algorithm is a string matching algorithm that uses hashing techniques to find occurrences of a pattern within a larger text.
Algorithm:
1. Preprocess the pattern:
- Calculate the hash value of the pattern.
- Calculat...
Z Algorithm
Z Algorithm
Z algorithm (Linear time pattern searching Algorithm)
This is a linear time pattern searching algorithm used to find all occurrences of a pattern within a text. It preprocesses the pattern to construct a Z-array, which contains information about ...
KMP Algorithm for Pattern Searching
KMP Algorithm for Pattern Searching
The Knuth-Morris-Pratt (KMP) algorithm is a pattern searching algorithm that efficiently finds all occurrences of a pattern within a text. It utilizes a preprocessed array called the "failure function" or "longest prefix suffix array" to skip unnecess...
Boyer Moore Algorithm for Pattern Searching
Boyer Moore Algorithm for Pattern Searching
This algorithm efficiently finds all occurrences of a pattern within a text. It uses two heuristic rules to skip unnecessary comparisons, making it one of the fastest string matching algorithms.
Algorithm:
1. Preprocess the pattern:
- Co...
Comparing BSTs, Tries and TSTs
Comparing BSTs, Tries and TSTs
1. Structure:
- BST: Each node contains a string value and has two child nodes, with strings in the left subtree being smaller and strings in the right subtree being larger.
- Trie: Each node represents a character, and paths from the ...
Data Structures for Storing Strings
Data Structures for Storing Strings
The following data structures can be used for storing strings efficiently:
Hashing tables use a hash function to map strings to indices in a hash table(a...
Suffix Trees
Suffix Trees
What is a Suffix Tree?
A suffix tree is a tree-like data structure used to efficiently store and search for substrings of a given string. It is particularly useful for various string-related algorithms such as pattern matching, substring search, ...
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