Solution: Minimum String Length After Removing Substrings
Explore how to implement a stack algorithm to remove all occurrences of substrings AB and CD from a given uppercase string. This lesson teaches you to process the string in a single pass, efficiently reducing it to the shortest possible length by using stack operations to track and remove pairs. Understand the time and space complexity involved in this approach and apply it to solve similar string manipulation problems.
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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:
s.length...