Solution: Count Substrings With K-Frequency Characters II
Explore how to use the sliding window technique to count substrings containing characters that appear at least k times. This lesson guides you through maintaining frequency counts and adjusting window boundaries to efficiently solve the problem in linear time while managing space complexity.
We'll cover the following...
We'll cover the following...
Statement
Given a string s and an integer k, return the total number of substrings of s where at least one character appears at least k times.
Note: A substring is a contiguous sequence of characters within a string. For example, "edu" is a substring of "educative".
Constraints:
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