522 - Longest Uncommon Subsequence II.

Medium

Given an array of strings strs, return the length of the longest uncommon subsequence between them. If the longest uncommon subsequence does not exist, return -1.

An uncommon subsequence between an array of strings is a string that is a subsequence of one string but not the others.

A subsequence of a string s is a string that can be obtained after deleting any number of characters from s.

• For example, "abc" is a subsequence of "aebdc" because you can delete the underlined characters in <code>"a<ins>e</ins>b<ins>d</ins>c"</code> to get "abc". Other subsequences of "aebdc" include "aebdc", "aeb", and "" (empty string).

Example 1:

Input: strs = "aba","cdc","eae"

Output: 3

Example 2:

Input: strs = "aaa","aaa","aa"

Output: -1

Constraints:

• 2 <= strs.length <= 50

• 1 <= strs[i].length <= 10

• strs[i] consists of lowercase English letters.