Implement a stack with the help of a priority queue or a heap. Priority Queue : Priority queue data structure is similar to the queue or stack data structure with an addition of priority. Every element is given a priority number. In conclusion, the elements with high priority are prefered …
We have to design and create a stack that performs the operations in constant time. Here we have one problem which is how to create mergable stack? Here we perform the below operation for merge two stacks. push(element): Insert the element in the stack. pop(): Remove the top element in …
Given 3 arrays stack1[ ], stack2[ ] and stack3[ ] representing stacks and the starting index of these arrays are treated as their top. Find the common maximum sum possible in all the three stacks i.e. the sum of elements of stack1, stack2 and stack3 are equal. Removal of the …
In Print Next Greater Number of Q queries problem we have given an array a[ ] of size n containing numbers and another array q[ ] of size m representing queries. Each query represents the index in array a[ ]. For each query, i print the number from the array …
We have given a string s of length n which contains lower case letters, upper case letters, integers, and some special symbol. Reverse the given string using stack. Let’s see some examples for better understanding. Example Input s = “TutorialCup” Output puClairotuT Input s = “Stack” Output kcatS Using Stack …
In the Number of NGEs to the right problem we have given an array a[ ] of size n and q number of queries representing the index of the array. For each query, i print the total number of next greater elements to it’s right. Example Input a[ ] = …
Before getting on and along with what is the sliding window technique? What it does and how it does what it does let us get the hang of this concept by a small problem Given an array of integers, we have the task of finding the minimum sum from all …
Everyone might be wondering. Argh, another new MINIMAX ALGORITHM. Why do we need it? Let’s know to play a game of chess or tic-tac-toe we have often wondered if there was an algorithm to win the game. Explanation A lot of times we might have wondered if It was possible to …
This model was developed in 1983 by the International Standards Organization (ISO). This was the first step taken to standardized the international protocols used in various layers. As it deals with connecting open systems, that is, systems that are open for communication with other systems, the model is called the …
In prefix to infix conversion problem, we have given expression in prefix notation. Write a program to convert it into an infix expression. Prefix Notation In this notation the operands are written after the operator. It is also known as Polish Notation. For instance : +AB is an prefix expression. …