Solution: Search Suggestions System
Explore how to design a search suggestions system that suggests up to three product names sharing a prefix with the input word. Understand naive string matching and optimized trie-based approaches, their time and space complexities, and see step-by-step how to build and query the trie data structure.
Statement
Given an array of strings called products and a word to search, design a system that, when each character of the searched word is typed, suggests at most three product names from products. Suggested products should share a common prefix with the searched word. If more than three products exist with a common prefix, return the three product names that appear first in lexicographical order.
Return the suggested products, which will be an array of arrays after each character of searched word is typed.
Constraints:
-
products.length -
products[i].length