Solution: Longest Repeating Character Replacement
Explore how to use the sliding window approach to find the longest substring with all identical characters by replacing up to k characters. Understand the step-by-step algorithm, optimize with frequency tracking, and implement a solution with linear time complexity.
Statement
Given a string, s, and an integer, k, find the length of the longest substring in s, where all characters are identical, after replacing, at most, k characters with any other uppercase English character.
Constraints:
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