More Problems

• Create a function that uses stacks to solve the problem of finding the number of distinct subsequences that contain at least one vowel in a string.
• Design a stack-based approach to solve the problem of finding the shortest path in a graph with constraints on the number of edges.
• Implement a stack-based solution for solving the problem of checking if two graphs are isomorphic with constraints on the degree of nodes.
• Write a program to simulate a stack-based approach for solving the problem of finding the maximum sum of non-overlapping subarrays in a circular array.
• Create a stack-based system for solving the problem of determining if a string is a valid palindrome after removing at most k characters.
• Design a stack-based algorithm to solve the problem of finding the number of valid parentheses sequences that can be formed with a given number of pairs.
• Implement a stack-based solution for solving the problem of checking if a binary tree is a complete binary tree.
• Write a program to simulate a stack-based approach for solving the problem of finding the minimum number of operations to make two strings equal.