Count the Number of Good Subsequences
Try to solve the Count the Number of Good Subsequences problem.
We'll cover the following
Statement
Count and return the number of good subsequences in the given string s
. You may return the modulo
A subsequence is a sequence formed from another sequence by deleting some or no elements while keeping the order of the remaining elements unchanged.
A good subsequence is a subsequence of a string if it is not empty and the frequency of each character is the same.
Constraints:
s.length
s
will only contain lowercase English characters.
Examples
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