The Stack is a linear data structure that follows the LIFO(Last In First Out) principle, i.e, the element inserted at the last is the element… Read More
Category Archives: Stack
Given two integers S and N, the task is to find the maximum possible sum of squares of N integers that can be placed in… Read More
Given an array of strings Q[], consisting of queries of the following types: “WRITE X”: Write a character X into the document. “UNDO”: Erases the… Read More
Given a Stack S, the task is to print the elements of the stack from top to bottom such that the elements are still present… Read More
Given a Binary Search Tree, the task is to print the nodes of the BST in the following order: If the BST contains levels numbered… Read More
Given an array arr[] of size N, the task is to print the distance of every array element from its next greater element. For array… Read More
Given an undirected graph G with N nodes, M edges, and an integer K, the task is to find the maximum count of edges that… Read More
In a multi-threaded environment, the lock-free algorithms provide a way in which threads can access the shared resources without the complexity of Locks and without… Read More
Given a stack of integers S and an array of integers arr[], the task is to check if all the array elements are present in… Read More
Given a string, str, the task is to remove all the duplicate adjacent characters from the given string. Examples: Input: str= “azxxzy”Output: ay Removal of “xx”… Read More
Given a string S of valid parentheses sequence of length N and an even integer K, the task is to find the valid parentheses sequence… Read More
Given a string str and two integers X and Y, the task is to find the maximum cost required to remove all the substrings “pr”… Read More
Given string str, the task is to reverse the string by considering each word of the string, str as a single unit. Examples: Input: str… Read More
Given a list arr[] of everyday temperatures. For each day, the task is to find the count of days remaining for the next day with… Read More
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