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Booting Process in DOS Operating System

Booting may be defined as process of loading the operating system into memory. The booting process starts from the moment when we power on computer… Read More

Operating Systems

Maximum array elements that can be removed along with its adjacent values to empty given array

Given an array arr[] of size N. In each operation, pick an array element X and remove all array elements in the range [X –… Read More

Arcesium

array-rearrange

cpp-map

frequency-counting

Arrays

C++

DSA

Hash

Mathematical

Sorting

Minimum points to be selected such that removal of line segments passing through them empties given array

Given a 2D array arr[][], where each row is of the form {start, end} representing the start and endpoints of each line segment on the… Read More

Geometric-Lines

Arrays

DSA

Geometric

Greedy

Sorting

Maximize the minimum array element by M subarray increments of size S

Given an array arr[] of N integers and two integers S and M, the task is to maximize the minimum array element by incrementing any… Read More

subarray

two-pointer-algorithm

Arrays

DSA

Searching

Count of substrings having the most frequent character in the string as first character

Given a string S consisting of lowercase alphabets of size N, the task is to count all substrings which contain the most frequent character in… Read More

Amazon

frequency-counting

Hash

interview-preparation

DSA

Greedy

Hash

Strings

Queries to count occurrences of maximum array element in subarrays starting from given indices

Given two arrays arr[] and q[] consisting of N integers, the task is for each query q[i] is to determine the number of times the… Read More

array-range-queries

frequency-counting

Arrays

DSA

Hash

Difference between Shallow and Deep copy of a class

Shallow Copy: Shallow repetition is quicker. However, it’s “lazy” it handles pointers and references. Rather than creating a contemporary copy of the particular knowledge the… Read More

python

C++

Difference Between

Experiences

Internship

Interview Experiences

Programming Language

Python

The Slowest Sorting Algorithms

A Sorting Algorithm is used to rearrange a given array or list elements according to a comparison operator on the elements. The comparison operator is… Read More

Algorithms-Sorting-Quiz

Algorithms

Arrays

DSA

Sorting

Expedia Hackerrank test for SDE (8 Years Experienced)

The test was conducted on Hackerrank platform and there were three questions that needed to be solved in 100 minutes: Run-length Encoding. Device name system:… Read More

Expedia

Experienced

Experiences

Interview Experiences

Document Type Definition – DTD

A Document Type Definition (DTD) describes the tree structure of a document and something about its data. It is a set of markup affirmations that… Read More

HTML and XML

Web technologies-HTML and XML

Web Technologies

Amazon Interview Experience for SDE-1 | 6-Months Intern (On-Campus)

Round 1: An online assessment that consisted of four parts: Code Debugging: 7 questions to be debugged in 20 minutes. (easy-medium) Coding Test: 2 coding… Read More

Amazon

On-Campus

Experiences

Internship

Interview Experiences

Count alphanumeric palindromes of length N

Given a positive integer N, the task is to find the number of alphanumeric palindromic strings of length N. Since the count of such strings… Read More

Modular Arithmetic

palindrome

permutation

Permutation and Combination

Combinatorial

Competitive Programming

DSA

Mathematical

Strings

Sum of absolute differences of indices of occurrences of each array element

Given an array arr[] consisting of N integers, the task for each array element arr[i] is to print the sum of |i – j| for… Read More

cpp-map

frequency-counting

Algorithms

Arrays

C++ Programs

Competitive Programming

Data Structures

DSA

Hash

Mathematical

Searching

Amazon Interview Experience for Internship 2021 (On-Campus)

Amazon visited our campus (NIT Jamshedpur) in September 2020. Around 120 candidates were shortlisted for round-1. Round 1: This round was an online coding round… Read More

Amazon

On-Campus

Experiences

Internship

Interview Experiences

Possible arrangement of persons waiting to sit in a hall

Given an integer N, a binary string S and an array W[]. S denotes the sequence of N * 2 persons entering the hall, where… Read More

binary-string

priority-queue

Arrays

DSA

Mathematical

Queue

Sorting

Strings

Event Delegation in JavaScript

Before learning about Event Delegation in JavaScript, we must be familiar with phases of JavaScript event https://www.geeksforgeeks.org/phases-of-javascript-event/ Event Delegation is basically a pattern to handle… Read More

JavaScript-Misc

JavaScript

Web Technologies

Unusual behaviour with character pointers

In C++, cout shows different printing behaviour with character pointers/arrays unlike pointers/arrays of other data types. So this article will firstly explain how cout behaves… Read More

C Basics

C-Pointer Basics

C-Pointers

Pointers

C Language

C++

Difference between Binary Heap, Binomial Heap and Fibonacci Heap

Binary Heap:A Binary Heap is a Binary Tree with following properties. It’s a complete binary tree i.e., all levels are completely filled except possibly the… Read More

Data Structures-Heap

Data Structures

Difference Between

DSA

Heap

Fast I/O for Competitive Programming in Python

In Competitive Programming, it is important to read input as fast as possible to save valuable time. Input/Output in Python can be sometimes time taking… Read More

python-input-output

Algorithms

Competitive Programming

DSA

Python

Java Program to Print all the Strings that Match a Given Pattern from a File

Figure a way out to print all the strings that match a given pattern from a file. To get closer to the goal, concepts of… Read More

Java-Files

Java-String-Programs

Java

Java Programs