Solution: Minimum String Length After Removing Substrings
Explore using stack data structures to remove all occurrences of 'AB' and 'CD' substrings from a string. Understand how this approach simplifies the string step-by-step, enabling you to determine the shortest string length after all removals with O(n) time complexity. This lesson helps you implement and analyze an efficient solution for substring removal problems using stacks.
We'll cover the following...
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:
...