How to Solve Shortest Uncommon Substring in an Array Problem
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Shortest Uncommon Substring in an Array
You are given an array arr of size n consisting of non-empty strings. Find a string array answer of size n such that: answer[i] is the shortest substring of arr[i] that does not occur as a substring i...
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Understanding the Shortest Uncommon Substring in an Array Problem
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Problem Statement
You are given an array arr of size n consisting of non-empty strings. Find a string array answer of size n such that: answer[i] is the shortest substring of arr[i] that does not occur as a substring in any other string in arr. If multiple such substrings exist, answer[i] should be the lexicographically smallest. And if no such substring exists, answer[i] should be an empty string. Return the array answer.
Shortest Uncommon Substring in an Array
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Examples
arr = ["cab","ad","bad","c"]["ab","","ba",""]We have the following: - For the string "cab", the shortest substring that does not occur in any other string is either "ca" or "ab", we choose the lexicographically smaller substring, which is "ab". - For the string "ad", there is no substring that does not occur in any other string. - For the string "bad", the shortest substring that does not occur in any other string is "ba". - For the string "c", there is no substring that does not occur in any other string.
arr = ["abc","bcd","abcd"]["","","abcd"]We have the following: - For the string "abc", there is no substring that does not occur in any other string. - For the string "bcd", there is no substring that does not occur in any other string. - For the string "abcd", the shortest substring that does not occur in any other string is "abcd".
Constraints
n == arr.length2 <= n <= 1001 <= arr[i].length <= 20arr[i] consists only of lowercase English letters.How Interview Coder Helps with Leetcode Problems
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