Solution: Minimum String Length After Removing Substrings
Explore how to apply stack techniques to remove all occurrences of "AB" and "CD" substrings from a given uppercase string. Understand the step-by-step stack-based solution that efficiently shortens the string by popping matching pairs and pushing unmatched characters. Learn to assess time and space complexity while solving this practical string manipulation problem.
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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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