題目
You are given an array of stringswordsand a stringchars.
A string isgoodifit can be formed bycharacters fromchars(each charactercan only be used once).
Return the sum of lengths o
題目
Given an array of stringsarr. Stringsis a concatenation of a sub-sequence ofarrwhich haveunique characters.
Returnthe maximum possible lengthofs.
Example 1:
Input: arr = [