Time complexity of building a heap
Heapify is a common operation performed on binary heaps, which are data structures that are used to implement priority queues. It involves rearranging the elements in a heap to maintain...
Print Next Greater number of Q queries
Problem statement You are given an integer array of size n and q queries. Your task is to find the next greater element for each query. Each query consists of...
C++ Programs to Convert Binary to Decimal Number
The binary is a base-2 numbering system that uses only two digits, 0 and 1, to represent numbers. Decimal is a base-10 numbering system that uses ten digits, 0 through...
Heap sort in Java
What is heap? Heap is a special kind of complete binary tree in which the all node has a value greater (or smaller ) than all of its children ....
Min Heap in Java
What is Heap? Heap is a special kind of complete binary tree in which the all node has a value greater (or smaller ) than all of its children ....
Heap overflow and Stack overflow
The computer’s RAM has a few sections in it. Two of them are heap and stack. Both heap and stack store variables. Let's see about Heap and Stack briefly:- Both...
Next Greater Frequency Element
Problem statement Given an array, consisting of n elements, find the next greater frequency element of each element. The next greater frequency element of any element is the first element...
Evaluation of Postfix Expression
Evaluating postfix expressions, also known as Reverse Polish Notation (RPN), is a fundamental concept in computer science and mathematics. Unlike the more familiar infix notation, where operators are placed between...
Arithmetic Expression Evaluation
Arithmetic expression evaluation is the process of computing the value of a mathematical expression containing arithmetic operators, such as addition, subtraction, multiplication, and division, along with parentheses and operands. Before...
Next Greater Element
Problem statement Given an array, consisting of n elements, find the next greater element of each element. The next greater element of any element is the first larger element to...
Check for Balanced Parentheses in an Expression
In computer science, balanced parentheses are a common requirement for many programming languages and applications. Balanced parentheses refer to an expression in which all opening and closing parentheses are properly...
How to Solve Stock Span Problem?
What is Stock Span Problem: Stock span problem is a commercial problem where we have a series of N prices on the daily basis. And you need to calculate the...
Max Heap in Java
What is Heap? Heap is a special kind of complete binary tree in which the all node has a value greater (or smaller ) than all of its children ....
Implement a Stack Using Single Queue
Problem statement: We have to build a stack with a single queue. What is a Stack? Stack is a linear data structure in which a user can insert and delete...