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Solution: Remove All Adjacent Duplicates in String II

Understand how to implement a stack-based solution to remove all adjacent duplicates in a string repeated k times. Learn to track character counts and handle cascading removals for an efficient linear time algorithm.

Statement

Given a string s and an integer k, a k-duplicate removal involves selecting k adjacent and equal characters from s and removing them, after which the left and right portions of the string are joined together.

Perform k-duplicate removals on s repeatedly until no more can be made.

Return the final string after all such removals. The answer is guaranteed to be unique.

Constraints:

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