All Hard Articles

Project Idea | C.A.R.T (CROWD ANALYTIC in REAL TIME)

Project Title: CART(CROWD ANALYTICS in REAL TIME) INTRODUCTION: They say “Relevant, actionable data is your ace of spades”. But to play that card, one needs… Read More

Computer Subject

Misc

Programming Language

Project

Python

Web Technologies

Informatica Internship Interview Experience | Set 9

Informatica recently visited our campus to hire interns on 24th May. About 170 students appeared. Round 1: Online MCQ Test (45 minutes) This was an… Read More

Experiences

Internship

Interview Experiences

Maximum sub-matrix area having count of 1’s one more than count of 0’s

Given a N x N binary matrix. The problem is finding the maximum area sub-matrix having a count of 1’s one more than count of… Read More

Algorithms-Dynamic Programming

Hash

DSA

Dynamic Programming

Matrix

Microsoft Interview Experience | Set 176 (On-Campus)

Round 1(Coding Test): It was a coding test which was held on cocubes platform. 3 problems were given of varying marks: 2 marks: Given a… Read More

Misc

Sudo Placement[1.3] | Playing with Stacks

You are given 3 stacks, A(Input Stack), B(Auxiliary Stack) and C(Output Stack). Initially stack A contains numbers from 1 to N, you need to transfer… Read More

Algorithms-Greedy Algorithms

cpp-stack

Sudo Placement

DSA

Stack

PHP | mysqli_num_rows() Function

The mysqli_num_rows() function is an inbuilt function in PHP which is used to return the number of rows present in the result set. It is… Read More

PHP

Web Technologies

Number of Counterclockwise shifts to make a string palindrome

Given a string of lowercase English alphabets, find the number of counterclockwise shifts of characters required to make the string palindrome. It is given that… Read More

DE Shaw

Hash

palindrome

Data Structures

DSA

Hash

Strings

Place N^2 numbers in matrix such that every row has an equal sum

Given a number N, place numbers from the range [1, N2] in an NxN matrix such that sum in every row is equal. Examples: Input:… Read More

Greedy Algorithms

math

DSA

Greedy

Matrix

Minimum steps to reach target by a Knight | Set 2

Given a square chessboard of N x N size, the position of Knight and position of a target is given, the task is to find… Read More

Algorithms-Dynamic Programming

chessboard-problems

Algorithms

Competitive Programming

DSA

Dynamic Programming

L-graphs and what they represent in TOC

Prerequisite – Finite automata introduction All programming languages can be represented as a finite automata. C, Paskal, Haskell, C++, all of them have a specific… Read More

Misc

Theory of Computation

Synopsys Interview Experience | Set 8 (7+ years experience)

Round 1 : ——————————– 1) How can you design a hash which can have million entries with minimising collision? 2) Clone a binary tree 3)… Read More

Experiences

Interview Experiences

Salesforce Interview Experience | Set 6 (Off-Campus for Associate Member of Technical Staff)

I recently interviewed with Salesforce Hyderbad for AMTS Distributed Systems Engineer role. A total of 5 rounds were taken. Round 1 (Coding Round): The coding… Read More

Experiences

Interview Experiences

array data() in C++ STL with Examples

The array::data() is a built-in function in C++ STL which returns an pointer pointing to the first element in the array object. Syntax: array_name.data() Parameters:… Read More

cpp-array

STL

C++

Zone-based firewall

A firewall is a network security system that monitors and takes actions on the ingoing or outgoing packets based on the defined rules. It can… Read More

Computer Networks

jQuery add() method

The jQuery add() method is used to add elements to the existing group of elements. This method can add element to the whole document, or… Read More

jQuery-Methods

JQuery

Web Technologies

Element which occurs consecutively in a given subarray more than or equal to K times

Given an array of size N and Q queries, each query consists of L, R, and K(consider 1 based-indexing for L and R). The task… Read More

Zoho Interview Experience | Set 39 (On-Campus Drive for Software Developer)

The recruitment process took place for two days in our campus in June ’17. Round 1: This was an online MCQ’s test .There were 20… Read More

Experiences

Interview Experiences

smatch | Regex (Regular Expressions) in C++

smatch is an instantiation of the match_results class template for matches on string objects. Functions that can be called using smatch: str(), position(), and length()… Read More

Misc

BigInteger modPow() Method in Java

Prerequisite: BigInteger BasicsThe Java.math.BigInteger.modPow() method returns a BigInteger whose value is (thisexponent mod m ). If exponent == 1, the returned value is (this mod m)… Read More

Java-BigInteger

Java-Functions

java-math

Java-math-package

Java

Mapping Java Beans to CSV Using OpenCSV

The need to convert Java Beans(Objects) to CSV file arises very commonly and there are many ways to write Bean into CSV file but one… Read More

CSV

Java