More Problems

• Write a program to push elements into a stack and remove duplicates while maintaining the order of elements.
• Create a function to implement a stack-based approach for finding the maximum depth of nested parentheses in a string.
• Write a program to reverse the order of elements in a stack of linked list nodes.
• Implement a function to convert a postfix expression to prefix using a stack.
• 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.