More Problems

• Design a stack-based approach to solve the problem of finding the number of distinct subsequences in a string that contain all vowels.
• Implement a stack-based solution for solving the problem of finding the maximum sum of elements in an array that can be split into k non-overlapping subarrays.
• Write a program to simulate a stack-based approach for solving the problem of determining if a binary tree contains a path that sums to a given value with at most k allowed changes to node values.
• Create a stack-based system for solving the problem of finding the minimum number of operations to convert a binary string into a string with alternating characters.
• Design a stack-based algorithm to solve the problem of checking if a directed acyclic graph contains any cycles with specific constraints on edge weights.
• Implement a stack-based solution for solving the problem of finding the number of valid parentheses substrings of a given length with constraints on the maximum nesting depth.
• Write a program to simulate a stack-based approach for solving the problem of finding the maximum number of non-overlapping palindromic substrings in a string with additional constraints on character frequency.
• Create a function that uses stacks to solve the problem of determining if a binary tree contains all possible root-to-leaf paths with a given sum.