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D.E. Shaw Interview Experience for Software Developer (Full Time)

Online [Coding] Round: The test had three sections – Coding, Technical and Aptitude. It was hosted on HackerRank. Coding round had 2 questions – Time… Read More

Experiences

Interview Experiences

Gaussian Mixture Model

Suppose there are a set of data points that need to be grouped into several parts or clusters based on their similarity. In Machine Learning,… Read More

Computer Subject

Machine Learning

Amazon India SDE III Interview Experience

Round 1: This was on HLD, I was asked a question on how to design an online chess game. The questions asked were how will… Read More

Experiences

Interview Experiences

tf-idf Model for Page Ranking

tf-idf stands for Term frequency-inverse document frequency. The tf-idf weight is a weight often used in information retrieval and text mining. Variations of the tf-idf… Read More

Computer Subject

GBlog

Machine Learning

Print all the combinations of a string in lexicographical order

Given a string str, print of all the combinations of a string in lexicographical order.Examples: Input: str = "ABC" Output: A AB ABC AC ACB… Read More

Algorithms-Backtracking

Algorithms-Recursion

C-String-Question

lexicographic-ordering

Algorithms

Backtracking

DSA

Recursion

Amazon On-Campus – 6 months Internship (SDE)

Round 1: Coding round + MCQs There were 2 coding questions and 20 mcqs of variable marks such as 4, 6 and 2 and no… Read More

Experiences

Interview Experiences

TCS off campus drive through Codevita

I solved just two questions in codevita 2018 and was called for an interview session at TCS Geetanjali Park at 12:00 noon on Aug 22,… Read More

Experiences

Interview Experiences

Count pairs with Bitwise XOR as ODD number

Given an array of N integers, the task is to find the number of pairs (i, j) such that A[i] ^ A[j] is odd.Examples: Input… Read More

Bitwise-XOR

Bit Magic

DSA

Flipkart On-Campus Interview SDE-1

Coding Round was a 1 and half an hour round. Three questions were there. Tell if parenthesization is valid or invalid with strings containing {}[]<>.Find… Read More

Experiences

Interview Experiences

Amazon Internship Interview Experience On-Campus

Recently Amazon visited our college for hiring 2 months summer interns. Round 1: It was Online round on HackerEarth consisting of 20 technical questions and… Read More

Experiences

Interview Experiences

Construct Pushdown automata for L = {0n1m2(n+m) | m,n ≥ 0}

Prerequisite – Pushdown automata, NPDA for accepting the language L = {ambnc(m+n) | m,n ≥ 1} PDA plays a very important role in task of… Read More

GATE CS

Theory of Computation

Construct a Turing machine for L = {aⁱb^jc^k | i*j = k; i, j, k ≥ 1}

Prerequisite – Turing Machine In a given language, L = {aibjck | i*j = k; i, j, k ≥ 1}, where every string of ‘a’, ‘b’… Read More

Theory of Computation

Hadoop | History or Evolution

Hadoop is an open source framework overseen by Apache Software Foundation which is written in Java for storing and processing of huge datasets with the… Read More

Misc

C# | Char.IsUpper() Method

In C#, Char.IsUpper() is a System.Char struct method which is used to check whether a Unicode character can be categorized as an uppercase letter or… Read More

CSharp-Char-Struct

CSharp-method

C#

static_cast in C++

A Cast operator is a unary operator which forces one data type to be converted into another data type. C++ supports 4 types of casting:… Read More

C++

Send unlimited Whatsapp messages using JavaScript

When it comes to web development, JavaScript can do wonders! Let me show you one more wonder of JavaScript. Wouldn’t it be cool if we… Read More

JavaScript

Misc

Technical Scripter

TechTips

Web Technologies

Sum of XOR of sum of all pairs in an array

Given an array, find the XOR of sum of all pairs in an array. Examples: Input : arr[] = {1, 2, 3} Output : 0… Read More

Algorithms

C++ Programs

DSA

SAP Labs, India Internship Interview Experience (On Campus)

Online Round SAP Labs India visited our campus on 11’th Aug 2018 offering full time as well as internship (2 months, 6 months) Following was… Read More

Experiences

Interview Experiences

Minimum cost path from source node to destination node via an intermediate node

Given an undirected weighted graph. The task is to find the minimum cost of the path from source node to the destination node via an… Read More

cpp-multiset

cpp-vector

Dijkstra

Greedy Algorithms

Competitive Programming

DSA

Graph

Print all the cycles in an undirected graph

Given an undirected graph, print all the vertices that form cycles in it. Pre-requisite: Detect Cycle in a directed graph using colors Undirected Graph In the… Read More

Algorithms-Backtracking

DFS

Graph Coloring

graph-cycle

DSA

Graph