424. Longest Repeating Character Replacement- leetcode solution by ARAVIND A in java

You are given a string s and an integer k. You can choose any character of the string and change it to any other uppercase English character. You can perform this operation at most k times. Return the length of the longest substring containing the same letter you can get after performing the above operations. https://leetcode.com/problems/longest-repeating-character-replacement/