More Problems

• Create a function to reverse the elements of a stack while keeping every third element in place.
• Write a program to simulate a stack-based approach for solving the problem of rainwater trapping.
• Implement a function to evaluate a postfix expression with support for multiple operations and parentheses using a stack.
• Write a program to reverse the order of the words in a string using a stack of characters.
• Create a function to implement a stack-based approach for finding the longest valid parentheses substring in a given string.
• Write a program to merge two sorted stacks while ensuring that the resulting stack remains sorted.
• Implement a function to reverse the order of every second group of k elements in a stack using recursion.
• Write a program to evaluate an arithmetic expression in prefix notation using a stack.