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Write a function:
class Solution{ public int solution(String []A);}
that given an array A consisting of N strings, calculates the length of the longest string S fulfilling the conditions i.e. S is a concatenation of some of the strings from A and every letter in S is different.

Example: A=["do","lit","tyu"] should return 5.
A=["abc","yyy","def"] should return 6.

What I have tried:

I couldn't find the right approach for this ques please help !!
Updated 11-Aug-22 22:40pm
Richard MacCutchan 12-Aug-22 4:29am    
You need to create sets of strings making a note of any sets that contain unique letters. Once you have compared everything you can find the longest set.

1 solution

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