## Mathematics | Eigen Values and Eigen Vectors

Eigen vector of a matrix A is a vector represented by a matrix X such that when X is multiplied with matrix A, then the… Read More »

## D E Shaw Interview Experience | Set 16 (On-Campus for Internship)

First shortlisted based on CGPA >= 7.5 and ONLY CSE student allowed to sit in interview. They(D-E-Shaw) had 2 phases of selection procedure. FIRST PHASE… Read More »

## Classification of Context Free Grammars

Context Free Grammars (CFG) can be classified on the basis of following two properties: 1) Based on number of strings it generates. If CFG is… Read More »

## Frobenius coin problem

Given two coins of denominations “X” and “Y” respectively, find the largest amount that cannot be obtained using these two coins (assuming infinite supply of… Read More »

## Count numbers having 0 as a digit

Count how many integers from 1 to N contains 0’s as a digit. Examples: Input: n = 9 Output: 0 Input: n = 107 Output:… Read More »

## Important differences between Python 2.x and Python 3.x with examples

Division operator print function Unicode xrange Error Handling _future_ module Division operator If we are porting our code or executing the python 3.x code in… Read More »

## Top 10 Frameworks for Web Applications

Web Application Framework or simply “web framework” is a software framework that is designed to support the development of web applications including web services, web… Read More »

## How to input multiple values from user in one line in Python?

For instance, in C we can do something like this: filter_none edit close play_arrow link brightness_4 code // Reads two values in one line scanf(“%d… Read More »

## Number of Integral Points between Two Points

Given two points p (x1, y1) and q (x2, y2), calculate the number of integral points lying on the line joining them. Example : If… Read More »

## How to use OESIS (On-line Encyclopedia of Integer Sequences)

We sometimes land up in a situation when various coding problems can be simplified to a mathematical formula but often finding that formula isn’t that straightforward… Read More »

## Garbage Collection in Java

Introduction In C/C++, programmer is responsible for both creation and destruction of objects. Usually programmer neglects destruction of useless objects. Due to this negligence, at… Read More »

## ­­kasai’s Algorithm for Construction of LCP array from Suffix Array

Background Suffix Array : A suffix array is a sorted array of all suffixes of a given string. Let the given string be “banana”. 0… Read More »