Break down the sliding window technique to solve computational problems with optimized efficiency.

Central CIP Path

Sliding Window

# 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 lowercase English character. 

**Constraints**:

* $1 \leq$ `s.length` $\leq 10^3$
* `s` consists of only lowercase English characters
* $0 \leq$ `k` $\leq$ `s.length`

# Example

Try to solve the Longest Repeating Character Replacement problem.

Problem: Longest Repeating Character Replacement

Statement

Example