More Problems

• Write a program to reverse the order of elements in a stack by groups of k.
• Create a function to find the first non-repeating character in a string using a stack.
• Write a program to implement the Min-Stack, which supports push, pop, and finding the minimum element in constant time.
• Implement a function to evaluate a boolean expression in postfix notation using a stack.
• Write a program to simulate a stack-based approach for finding the maximum rectangle area in a binary matrix.
• Create a function to reverse every second pair of elements in a stack recursively.
• Write a program to implement a stack that supports pushing and popping of elements with priority.
• Implement a function to solve the problem of finding the length of the longest valid substring of parentheses using a stack.