Web Reference: Disclaimer: The above Problem ( Java Stack ) is generated by Hacker Rank but the Solution is Provided by CodingBroz. This tutorial is only for Educational and Learning Purpose. In computer science, a stack or LIFO (last in, first out) is an abstract data type that serves as a collection of elements, with two principal operations: push, which adds an element to the collection, and pop, which removes the last element that was added.(Wikipedia) 317 efficient solutions to HackerRank problems. Contribute to RodneyShag/HackerRank_solutions development by creating an account on GitHub.
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