More Problems

• Create a function to find the next smaller element in a circular array using a stack and maintain the original order.
• Write a program to reverse the elements of a stack, but leave the top k elements unchanged.
• Implement a function to evaluate an arithmetic expression in infix notation using a stack with support for exponentiation.
• Write a program to simulate a stack-based approach to evaluate postfix expressions with variables.
• Create a function to merge multiple stacks into one stack while keeping the merged elements in sorted order.
• Write a program to reverse the elements of a stack using only one additional variable.
• Implement a function to simulate a stack-based undo/redo functionality in a drawing application.
• Write a program to solve the problem of rainwater trapping using a stack and additional data structures.