Programming
programming
text
algorithms
What is String Matching?
Definition
String matching is the algorithmic process of finding occurrences of a pattern within a text. Methods range from simple substring search to regex patterns, fuzzy matching (Levenshtein distance), and full-text search engines (Elasticsearch).
Why It Matters
String matching powers search features, input validation, autocomplete, code analysis, and data extraction. Choosing the right algorithm (exact match, regex, fuzzy) depends on the use case — search engines use inverted indexes, while validators use regex.