More Problems

• Write a program to simulate a stack-based approach for solving the problem of finding the maximum number of distinct subsequences in a string that contain all vowels.
• Create a function that uses stacks to solve the problem of finding the minimum number of operations to convert a binary tree into a height-balanced tree.
• Design a stack-based approach to solve the problem of finding the longest increasing subsequence in a circular array with constraints on the number of allowed swaps.
• Implement a stack-based solution for solving the problem of determining if two graphs are isomorphic with additional constraints on the degree of nodes.
• Write a program to simulate a stack-based approach for solving the problem of finding the minimum number of swaps required to make a binary string alternating.
• Create a stack-based system for solving the problem of finding the maximum product of two non-overlapping subarrays in a matrix with constraints on subarray size.
• Design a stack-based algorithm to solve the problem of finding the shortest path in a weighted graph with constraints on edge weights and number of nodes.
• Implement a stack-based solution for solving the problem of checking if a binary tree contains all valid root-to-leaf paths with alternating left and right child nodes.