More Problems

• Write a program to validate a sequence of pushed and popped operations in two stacks.
• Create a function to check if an array can be sorted using a stack and a queue.
• Write a program to implement a stack that supports both push and pop in O(1) time, and find the median in O(1).
• Design a stack-based approach to simulate a tournament bracket system.
• Implement a function to find the maximum value in each sliding window of size k using a stack.
• Write a program to simulate a sequence of stack operations based on a given log file.
• Create a function to reverse the order of elements in multiple stacks simultaneously.
• Write a program to find the minimum spanning tree of a graph using a stack.