Longest Word With All Prefixes
Explore how to solve the problem of finding the longest string in an array where every prefix is also present. Learn to implement and use trie structures to efficiently check prefixes and handle lexicographic conditions, enhancing your coding interview skills in C#.
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Statement
You are given an array of strings, words. Your task is to find the longest string in words such that every prefix of this string is also present in words.
A prefix of a string is any leading substring. For example, the prefixes of "apple" are "a", "ap", "app", and "appl".
If multiple valid strings have the same maximum length, return the lexicographically smallest one.
If no such string exists, return an empty string
"".
Constraints:
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