Longest Word With All Prefixes
Explore how to solve the problem of finding the longest word that has all its prefixes present in a given array of strings. Learn to implement and utilize tries for efficient prefix checking, develop solutions that handle lexicographic order, and practice coding this pattern in C# to prepare for technical interviews.
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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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