More Problems

• Implement a function to reverse every fourth group of elements in a stack using recursion.
• Write a program to simulate a stack-based approach for detecting the longest valid substring of parentheses in a string.
• Create a function to reverse the digits of all numbers divisible by 9 in a stack using recursion.
• Write a program to simulate a stack-based system for solving the celebrity problem in a group of people.
• Implement a function to reverse every third group of elements in a stack without using recursion.
• Write a program to simulate a stack-based approach for checking whether a sequence of stack operations is valid.
• 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 approach for finding the maximum rectangle in a binary matrix.