This program demonstrates how to check if a string containing different types of parentheses (i.e., ‘(‘, ‘)’, ‘{‘, ‘}’, ‘[‘, ‘]’) is balanced. […]

    This program demonstrates how to find the next greater element for each element in an array using a stack data structure. The next […]

    This Java program demonstrates how to implement a stack that supports pushing, popping, and retrieving the minimum element in constant time. The stack […]

    This Java program demonstrates how to implement a circular queue using an array. A circular queue is a linear data structure that follows […]

    An LRU (Least Recently Used) cache is a cache eviction algorithm that discards the least recently used items first when the cache is […]

  This Java program demonstrates how to evaluate postfix expressions using a stack. Postfix notation, also known as Reverse Polish Notation (RPN), is a mathematical […]

    This Java program demonstrates how to sort elements in one stack using another temporary stack. The algorithm leverages the properties of the stack […]

    This Java program uses a deque to solve the problem of finding the maximum in each sliding window of size k within a […]