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Problem: Longest Repeating Character Replacement

Medium
30 min
Explore how to apply the sliding window technique to find the longest substring with all identical characters after replacing at most k characters. This lesson helps you understand the problem constraints, practice implementation, and prepare for coding interviews focused on string manipulation and optimization.

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:

  • 11 \leq s.length 103\leq 10^3

  • s consists of only uppercase English characters.

  • 00 \leq k \leq s.length

Problem
Ask
Submissions

Problem: Longest Repeating Character Replacement

Medium
30 min
Explore how to apply the sliding window technique to find the longest substring with all identical characters after replacing at most k characters. This lesson helps you understand the problem constraints, practice implementation, and prepare for coding interviews focused on string manipulation and optimization.

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:

  • 11 \leq s.length 103\leq 10^3

  • s consists of only uppercase English characters.

  • 00 \leq k \leq s.length