All Medium Articles

QA – Placement Quizzes | Time Speed Distance | Question 1

Samuel covers the distance from his home to his office at a speed of 25 km/hr and comes back at a speed of 4 km/hr.… Read More

QA - Placement Quizzes

QA - Placement Quizzes-Time Speed Distance

Time Speed Distance

QA – Placement Quizzes

Strategy Design Pattern

The Strategy Design Pattern defines a family of algorithms, encapsulates each one, and makes them interchangeable, allowing clients to switch algorithms dynamically without altering the… Read More

Design Pattern

System Design

Implementation of 0/1 Knapsack using Branch and Bound

Given two arrays v[] and w[] that represent values and weights associated with n items respectively. Find out the maximum value subset(Maximum Profit) of v[]… Read More

knapsack

Branch and Bound

DSA

Count strings with consecutive 1’s

Given a number n, count number of n length strings with consecutive 1’s in them. Examples: Input : n = 2 Output : 1 There… Read More

Amazon

binary-string

Bit Magic

DSA

Laravel Tutorial

Laravel is an open-source PHP web application framework that has gained big popularity since its beginning in 2011. Created by Taylor Otwell, Laravel embodies the principles of Elegance,… Read More

Laravel

Tutorials

PHP

Project

Web Technologies

0/1 Knapsack using Branch and Bound

Given two arrays v[] and w[] that represent values and weights associated with n items respectively. Find out the maximum value subset(Maximum Profit) of v[]… Read More

knapsack

Arrays

Branch and Bound

DSA

Viruses – From Newbie to pro

NOTE: Using an online compiler is not going to work here. Please install Python 2.7x and cv2, argparse modules to actually try out this example.… Read More

Project

Python

Perfect Binary Tree Specific Level Order Traversal | Set 2

Perfect Binary Tree using Specific Level Order Traversal in Set 1. The earlier traversal was from Top to Bottom. In this post, Bottom to Top… Read More

tree-level-order

DSA

Tree

Functors in C++

Please note that the title is Functors (Not Functions)!! Consider a function that takes only one argument. However, while calling this function we have a… Read More

CPP-Functions

cpp-pointer

STL

C Language

C++

Find Square Root under Modulo p | Set 2 (Shanks Tonelli algorithm)

Given a number ‘n’ and a prime ‘p’, find square root of n under modulo p if it exists. Examples: Input: n = 2, p =… Read More

Modular Arithmetic

DSA

Mathematical

volatile Keyword in Java

Using volatile is yet another way (like synchronized, atomic wrapper) of making class thread-safe. Thread-safe means that a method or class instance can be used… Read More

Java

Compound Interest – Aptitude Questions and Answers

Compound interest is a type of interest that is calculated on the initial principal and all of its subsequent accumulated interest. It is different from… Read More

DSA

Mathematical

Placements

Construct Ancestor Matrix from a Given Binary Tree

Given a Binary Tree where all values are from 0 to n-1. Construct an ancestor matrix mat[n][n]. Ancestor matrix is defined as below. mat[i][j] =… Read More

DSA

Matrix

Tree

Rearrange a Linked List in Zig-Zag fashion

Given a linked list, rearrange it such that the converted list should be of the form a < b > c < d > e… Read More

Amazon

DSA

Linked List

Amazon Interview Experience | Set 255 (On-Campus)

Amazon visited our campus. It started with a online coding round and followed by one telephonic and then 3 face to face interview and again… Read More

Amazon

DSA

Experiences

Interview Experiences

Tree

Interra System Interview Experiences

Round 1: Subjective written round Programming output questions on constant pointer, static variable, typedef, macro, virtual function, copy constuctor etc Also write codes for reverse… Read More

Interra System

Experiences

Interview Experiences

Vertical Sum in Binary Tree | Set 2 (Space Optimized)

Given a Binary Tree, find vertical sum of the nodes that are in same vertical line. Print all sums through different vertical lines. Examples: 1… Read More

Amazon

DSA

Tree

Bloomberg Interview | Set 3 (For Software Development Programmer)

Interview Process : I applied through career page and got reply through mail for discussion about my internship project and final year project. After that… Read More

Bloomberg

Experiences

Interview Experiences

Alligation or Mixture – Aptitude Questions and Answers

Mixture and alligation are important concepts in quantitative aptitude used to determine the ratio and cost of sale for a mixture made up of two… Read More

Placements

QA - Placements

Percentages – Aptitude Questions and Answers

Are you struggling with percentage calculations and looking to improve your quantitative aptitude skills? Our collection of percentage aptitude questions is here to help! Developed… Read More

Placements

QA - Placements