Solution: Minimum String Length After Removing Substrings
Explore how to apply a stack data structure to efficiently remove all occurrences of 'AB' and 'CD' substrings from a given string. This lesson helps you understand the step-by-step process of checking and removing pairs using a stack to achieve the shortest possible string length, while analyzing time and space complexities of the approach.
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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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