Solution: Minimum String Length After Removing Substrings
Explore how to solve the problem of reducing a string's length by removing all occurrences of the substrings AB and CD. Learn to implement a stack-based algorithm that processes the string in one pass to efficiently identify and remove pairs, leaving the shortest possible string. Understand the step-by-step logic and analyze time and space complexity for practical coding interviews.
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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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