Count Substrings With K-Frequency Characters II
Explore how to efficiently count substrings where at least one character appears at least k times by applying the sliding window technique to string problems. This lesson helps you understand substring constraints and implement solutions with optimal time 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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