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Practice questions on B and B+ Trees

In this article, we will discuss different types of problems based on B and B+ trees. Before understanding this article, you should understand basics of… Read More

B-Tree

DBMS

GATE CS

MCQ

Misc

Amazon Interview Experience | Set 421 (For Internship)

Recently Amazon visited our campus for Internship and Full time. Coding Test: Was an online test which comprised of 2 coding questions and 20 MCQs. MCQs… Read More

Amazon

Experiences

Internship

Interview Experiences

Infoedge Interview Experience | Set 5 (Off-Campus for Software Engineer)

Round 1 Telephonic interview : Database-> ACID properties Oops concept–>can constructors be private ?If yes, how can they be called (singleton class) Prepare in depth… Read More

InfoEdge

Experiences

Interview Experiences

Program to print Swastika Pattern

Given the number of rows and columns, print the corresponding swastika pattern using loops. Note: The number of rows and columns should be the same… Read More

pattern-printing

C Programs

C++ Programs

Size of file on the Internet using Java

To get the size of file from server first you need to connect to the server using URL and HttpURLConnection Class. To get the size… Read More

java-file-handling

Java-Networking

Java

Time complexity of all permutations of a string

Time complexity of printing all permutations of a string. void perm(String str){ perm(str, “”); } void perm(String str, String prefix){ … Read More

DSA

Strings

Boost.Lexical_Cast in C++

Boost.LexicalCast which is defined in the Library “boost/lexical_cast.hpp” provides a cast operator, boost::lexical_cast, that can convert numbers from strings to numeric types like int or… Read More

C-Library

cpp-boost

CPP-Library

C++

Technical Scripter

Design Video Sharing Service System like Youtube

PURPOSE OF VIDEO SHARING SERVICE SYSTEMYoutube is the advertisement based video sharing service that allows users to upload video based media contents. Users can upload,… Read More

Design Pattern

System Design

N Queen in O(n) space

Given n, of a n x n chessboard, find the proper placement of queens on chessboard.Previous Approach : N Queen Algorithm : Place(k, i) //… Read More

chessboard-problems

Algorithms

Backtracking

DSA

Matrix

Recursion

Part of Speech Tagging with Stop words using NLTK in python

The Natural Language Toolkit (NLTK) is a platform used for building programs for text analysis. One of the more powerful aspects of the NLTK module… Read More

python-modules

Python

java.util.Calendar.after() method

java.util.Calendar.after() is a method in Calendar class of java.util package. The method returns true if the time represented by this Calendar is after the time… Read More

date-time-program

Java - util package

Java

Misc

Path in a Rectangle with Circles

There is a m*n rectangular matrix whose top-left(start) location is (1, 1) and bottom-right(end) location is (m*n). There are k circles each with radius r.… Read More

circle

cpp-queue

Directi

square-rectangle

DSA

Geometric

Graph

Searching

Substrings starting with vowel and ending with consonants and vice versa

Given a string s, count special substrings in it. A Substring of S is said to be special if either of the following properties is… Read More

prefix-sum

DSA

Strings

Output of C programs | Set 65 (If-Else)

Prerequisite : Decision making in CQuestion 1 C #include"stdio.h" #include"stdlib.h" void reverse(int i) { if (i > 5) exit(0); printf("%d\n", i); return reverse(i++); } int… Read More

C Basics

Program Output

School Programming

Elo Rating Algorithm

The Elo Rating Algorithm is a widely used rating algorithm used to rank players in many competitive games. Players with higher ELO ratings have a… Read More

DSA

Mathematical

Design City Guide System like Foursquare

PURPOSE OF CITY GUIDE SERVICE City guide will be the service that allows users to search and find place near to user’s location. You can… Read More

Design Pattern

Misc

System Design

Modify a binary tree to get preorder traversal using right pointers only

Given a binary tree. Modify it in such a way that after modification you can have a preorder traversal of it using only the right… Read More

DSA

Stack

Tree

Practice Questions on Huffman Encoding

Huffman Encoding is an important topic from GATE point of view and different types of questions are asked from this topic. Before understanding this article,… Read More

Huffman Coding

DSA

GATE CS

Greedy

Misc

Tomohiko Sakamoto’s Algorithm- Finding the day of the week

Given any date according to the Gregorian Calendar, the task is to return the day(Monday, Tuesday…etc) on that particular day. Examples: Input : Date: 13 July… Read More

date-time-program

DSA

Mathematical

Total numbers with no repeated digits in a range

Given a range find total such numbers in the given range such that they have no repeated digits. For example: 12 has no repeated digit. 22… Read More

array-range-queries

number-digits

prefix-sum

DSA

Mathematical