All Easy Articles

Height of a generic tree from parent array

We are given a tree of size n as array parent[0..n-1] where every index i in the parent[] represents a node and the value at… Read More

n-ary-tree

DSA

Graph

Tree

Python | Print an Inverted Star Pattern

An inverted star pattern involves printing a series of lines, each consisting of stars (*) that are arranged in a decreasing order. Here we are… Read More

Basic Coding Problems

pattern-printing

Python Pattern-printing

DSA

Python Programs

priority_queue emplace() in C++ STL

Priority queues are a type of container adaptors, specifically designed such that the first element of the queue is either the greatest or the smallest… Read More

cpp-priority-queue

STL

C++

Misc

Make Notepad using Tkinter

Let’s see how to create a simple notepad in Python using Tkinter. This notepad GUI will consist of various menu like file and edit, using… Read More

Python-projects

Python-tkinter

Python

String Literal Vs String Object in Java

Compare string initialization performance for String Literal and String object. String Literal String str = “GeeksForGeeks”; This is string literal. When you declare string like… Read More

Java-Strings

Java

emplace vs insert in C++ STL

In C++, all containers (vector, stack, queue, set, map, etc) support both insert and emplace operations. Both are used to add an element in the… Read More

cpp-map

STL

C++

Misc

Flipkart Interview Experience | Set 47

Round 1:(Coding Round) First round was online coding round on HackerRank. It comprised of 3 coding questions and duration was 90 minutes. 2 questions were… Read More

Flipkart

Experiences

Interview Experiences

Ropes left after every removal of smallest

Given an array of an integer of size, N. Array contains N ropes of length Ropes[i]. You have to perform a cut operation on ropes… Read More

Arrays

DSA

Sorting

Average of first n even natural numbers

Given a number n then Find the Average of first n even natural numbers Ex.= 2 + 4 + 6 + 8 + 10 + 12… Read More

series

DSA

Mathematical

Amazon Interview Experience | Set 419

Round 1: There were three questions in first round:- How to find all boundary node of a tree. GeeksforGeeks Link How to reverse a string… Read More

Amazon

Binary Search Tree

DSA

Experienced

Experiences

Interview Experiences

Java

Tree

Sum of XOR of all pairs in an array

Given an array of n integers, find the sum of xor of all pairs of numbers in the array. Examples : Input : arr[] =… Read More

Bitwise-XOR

Arrays

Bit Magic

DSA

Chegg Interview Experience | Set 1 (For Internship)

Round 1:My round 1 was not that hard, it was resume based session, it started with my introduction and then i was asked about encapsulation,… Read More

Chegg

Experiences

Internship

Interview Experiences

Maximum sum of elements from each row in the matrix

Given a matrix, find the maximum sum we can have by selecting just one element from every row. Condition is element selected from nth row… Read More

DSA

Matrix

Searching

Queries for frequencies of characters in substrings

Given a string s and Q number of queries. Each query Q consists of l and r and a character c. Find the frequency of… Read More

array-range-queries

frequency-counting

DSA

Strings

Using std::vector::reserve whenever possible

In C++ vectors are dynamic arrays. Unlike arrays, they don’t have a fixed size. They can grow or shrink as required. Vectors are assigned memory… Read More

cpp-vector

STL

C++

Guide for Non-CS students to get placed in Software companies

This post is especially for people of non-CS branches who have developed interest towards coding and would like to work in a software company. The… Read More

Career-Advices

Interview Tips

interview-preparation

placement preparation

Misc

Placements

Introduction to Artificial Neural Networks | Set 1

ANN learning is robust to errors in the training data and has been successfully applied for learning real-valued, discrete-valued, and vector-valued functions containing problems such… Read More

Computer Subject

Machine Learning

Virtualization in Cloud Computing and Types

Virtualization is a technique of how to separate a service from the underlying physical delivery of that service. It is the process of creating a… Read More

Cloud-Computing

virtualization

Misc

Number of Reflexive Relations on a Set

Given a number n, find out the number of Reflexive Relation on a set of first n natural numbers {1, 2, ..n}. Examples : Input:… Read More

Bit Magic

Combinatorial

DSA

Mathematical

JavaScript Array of() Method

The Javascript array.of() method is an inbuilt method in JavaScript that creates a new array instance with variables present as the argument of the method.… Read More

javascript-array

JavaScript-Methods

JavaScript

Web Technologies