More Problems

• Write a function to check if parentheses in a string are balanced using a stack.
• Create a program to convert an infix expression to a postfix expression using a stack.
• Write a program to evaluate a postfix expression using a stack.
• Implement a function to find the minimum element in a stack.
• Create a stack that supports push, pop, and retrieving the minimum element in constant time.
• Write a program to sort elements in a stack.
• Implement a function to check if a stack is a palindrome.
• Write a function to merge two stacks into one.