Solution: Minimum String Length After Removing Substrings
Understand how to use a stack to iteratively remove all 'AB' and 'CD' substrings from a given string. Learn to implement an efficient algorithm that dynamically removes pairs and returns the shortest possible string length. This lesson covers solution logic, time and space complexity, and practical coding techniques for string manipulation using stacks.
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Statement
You are given a string, s, containing only uppercase English letters. You can perform operations on this string where, in each operation, you remove any occurrence of the substrings "AB" or "CD" from s.
Your task is to return the shortest string length after applying all possible operations.
Note: After each removal, the string joins back together, potentially creating new occurrences of "AB" or "CD" that can also be removed.
Constraints:
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