More Problems

• Implement 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 detecting the longest valid substring of parentheses.
• Create a function to reverse every second group of elements in a stack without recursion.
• Write a program to simulate a stack-based system for checking if a given sequence of operations on two stacks produces a valid sequence.
• Create a function to reverse the first half of a stack while leaving the second half unchanged using recursion.
• Write a program to simulate a stack-based solution for evaluating a prefix expression with multiple operators and parentheses.
• Implement a function to reverse every third group of elements in a stack without using recursion.
• Write a program to simulate a stack-based system for solving the stock span problem.