LLD Data Structures in Design Context: Why Some Problems Need Prefix Matching Instead of Exact Lookup

While HashMap, Heap, Queue, and Stack address specific design problems like exact lookups or order processing, some applications require identifying values based on partial input. When users provide only the beginning of a search term, the system must efficiently suggest possible matches. This prefix matching requirement is specifically solved by a Trie. Unlike other structures, a Trie is designed to organize data so that finding all entries sharing the same beginning becomes fast and natural.