Algorithms for measuring similarity between strings, used in spell checking, DNA sequencing, plagiarism detection, and fuzzy matching.

1. Levenshtein Distance (Edit Distance) Minimum number of single-character edits (insertions, deletions, substitutions) to transform one string into another. How It Works Core Idea: …

A Trie (pronounced "try") is a tree-like data structure used to store and retrieve strings efficiently. Each path from root to a node represents a prefix. Structure 1type TrieNode struct { 2 children map[rune]*TrieNode 3 isEnd bool // Marks end of a word 4} 5 6type Trie struct { 7 root *TrieNode 8} 9 10func …