More Problems

• Implement a function to reverse the order of every second element in a stack without recursion.
• Write a program to simulate a stack-based system for detecting the longest valid substring of parentheses in a string.
• Create a function to reverse every second element in a stack while leaving the first element unchanged.
• Write a program to simulate a stack-based solution for evaluating a postfix expression with multiple levels of parentheses.
• Implement a function to reverse the digits of numbers divisible by both 2 and 6 in a stack using recursion.
• Write a program to simulate a stack-based approach for solving the maximum area of a rectangle in a binary grid.
• Create a function to reverse every second group of k elements in a stack using recursion.
• Write a program to simulate a stack-based system for finding the largest element in a circular array.