All Hard Articles

Largest number with the given set of N digits that is divisible by 2, 3 and 5

Given a set of ‘N’ digits. The task is to find the maximum integer that we can make from these digits. The resultant number must… Read More

divisibility

Number Divisibility

Competitive Programming

DSA

Mathematical

Count ordered pairs of positive numbers such that their sum is S and XOR is K

Given a sum and a number . The task is to count all possible ordered pairs (a, b) of positive numbers such that the two positive integers… Read More

Bitwise-XOR

setBitCount

Technical Scripter 2018

Bit Magic

Combinatorial

DSA

Mathematical

is_volatile template in C++

The std::is_volatile template of C++ STL is used to check whether the type is a volatile-qualified or not. It returns a boolean value showing the… Read More

STL

C++

Microsoft IDC Interview Experience

Test: Find first non-repeating character in the string. Input: “aabcbd” Output: c K-reverse linked list Input: 1 2 3 4 5 -1 k = 3… Read More

Experiences

Interview Experiences

Samsung 6 month Internship Interview

Total 3 coding Question on co cubes Total 70 min 1. https://www.geeksforgeeks.org/closest-leaf-to-a-given-node-in-binary-tree/ 2. https://www.geeksforgeeks.org/even-numbers-even-index-odd-numbers-odd-index/ 3. Given an array containing both positive and negative entries, partition… Read More

Misc

Introduction of Microcomputer System

Introduction of Microcomputer System Microcomputer systems are small and inexpensive computers that are widely used in various applications. The 8085 microprocessor is an example of… Read More

microprocessor

Computer Organization & Architecture

Count all the numbers less than 10^6 whose minimum prime factor is N

Given a number N which is prime. The task is to find all the numbers less than or equal to 10^6 whose minimum prime factor… Read More

prime-factor

sieve

DSA

Mathematical

Architecture and Working of Hive

Prerequisite – Introduction to Hadoop, Apache Hive The major components of Hive and its interaction with the Hadoop is demonstrated in the figure below and all… Read More

BigData

Hadoop

Python program to sort a list of tuples by second Item

Given a list of tuples, write a Python program to sort the tuples by the second item of each tuple. Examples: Input : [('for', 24),… Read More

Python list-programs

Python tuple-programs

python-list

python-tuple

DSA

Python

Python Programs

School Programming

Total number of different staircase that can made from N boxes

Given N boxes of unit dimension, i.e. (1×1 ). The task is to find the total number of different staircases that can be made from those… Read More

Algorithms

DSA

Dynamic Programming

GE Appliances Interview Experience (On-campus)

Eligible branches : B.TECH : CSE/IT/ICT Criteria : 7 CGPA and above with no standing arrears. Around 200 students took the online test . Round… Read More

Experiences

Interview Experiences

Gaurav Sen – Geek on the top | Patience is the key factor for a good learner

Geek on the top is all about success stories of Geeks who are working hard to chase their goals and are an inspiration for other… Read More

Misc

What is the use of the @ symbol in PHP?

The at sign (@) is used as error control operator in PHP. When an expression is prepended with the @ sign, error messages that might… Read More

Picked

PHP

Web Technologies

Lexicographically largest prime path from top-left to bottom-right in a matrix

Given a m x n matrix of positive integers. The task is to find the number of paths from the top left of the matrix… Read More

DFS

lexicographic-ordering

sieve

DSA

Dynamic Programming

Matrix

Scanner hasNextInt() method in Java with Examples

The hasNextInt() method of java.util.Scanner class returns true if the next token in this scanner’s input can be assumed as a Int value of the… Read More

Java - util package

Java-Functions

Java-Scanner

Java

Check if Queue Elements are pairwise consecutive | Set-2

Given a Queue of integers. The task is to check if consecutive elements in the queue are pairwise consecutive. Examples: Input: 1 2 5 6… Read More

cpp-queue

Sorting Quiz

Data Structures

DSA

Queue

Find other two sides and angles of a right angle triangle

Given one side of right angle triangle, check if there exists a right angle triangle possible with any other two sides of the triangle. If… Read More

math

Technical Scripter 2018

triangle

DSA

Mathematical

Technical Scripter

Dunzo Interview for Software Developer Intern

Round 1: It was held oh hackerrank platform consist of 4 coding questions in 1 hr and 50 minutes. Q1. https://www.hackerrank.com/challenges/cut-the-sticks/problem Q2. A string is… Read More

Experiences

Interview Experiences

UBS Interview Experience – on Campus for Internship

I applied to UBS through college internship process. Round 1: Online Aptitude Test The first round was an aptitude test on hackerearth platform. The test… Read More

Experiences

Interview Experiences

Find triplets in an array whose AND is maximum

Given an array of positive integers of size n. Find the count of the triplets whose AND is maximum and also find that maximum given… Read More

Bitwise-AND

Technical Scripter 2018

Arrays

Bit Magic

Competitive Programming

DSA

Technical Scripter