All Medium Articles

Image Processing in Java – Face Detection

Prerequisites: Image Processing in Java – Read and Write Image Processing In Java – Get and Set Pixels Image Processing in Java – Colored Image… Read More

Image-Processing

Java

Java.util.zip.DeflaterOutputStream class in Java

Java.util.zip.DeflaterInputStream class in Java This class implements an output stream filter for compressing data in the “deflate” compression format. It is also used as the… Read More

Misc

Java.io.Printstream Class in Java | Set 1

A PrintStream adds functionality to another output stream, namely the ability to print representations of various data values conveniently. Unlike other output streams, a PrintStream… Read More

Java

Java.io.PrintWriter class in Java | Set 2

Java.io.PrintWriter class in Java | Set 1 More methods: PrintWriter printf(Locale l, String format, Object… args) : A convenience method to write a formatted string… Read More

Java-I/O

Java

Java.io.PrintWriter class in Java | Set 1

Java PrintWriter class gives Prints formatted representations of objects to a text-output stream. It implements all of the print methods found in PrintStream. It does… Read More

Java-I/O

Java

Inter Process Communication (IPC)

A process can be of two types: Independent process. Co-operating process. An independent process is not affected by the execution of other processes while… Read More

Process Synchronization

GATE CS

Operating Systems

Smallest number with at least n digits in factorial

Given a number n. The task is to find the smallest number whose factorial contains at least n digits.Examples: Input : n = 1 Output… Read More

Binary Search

factorial

DSA

Mathematical

Last non-zero digit of a factorial

Given a number n, find the last non-zero digit in n!.Examples: Input : n = 5 Output : 2 5! = 5 * 4 *… Read More

factorial

Modular Arithmetic

DSA

Mathematical

Recursion

Qualcomm Interview Experience | Set 8 (Experienced)

It was really good experience at Qualcomm. I was interviewed for Associate Software Engineer and have an experience of an year, first by telephonic round… Read More

Qualcomm

Bit Magic

DSA

Experienced

Experiences

Interview Experiences

Linked List

Mathematical

Tree

Hierholzer’s Algorithm for directed graph

Given a directed Eulerian graph, print an Euler circuit. Euler circuit is a path that traverses every edge of a graph, and the path ends… Read More

Algorithms

DSA

Graph

Sieve of Eratosthenes in 0(n) time complexity

The classical Sieve of Eratosthenes algorithm takes O(N log (log N)) time to find all prime numbers less than N. In this article, a modified… Read More

sieve

DSA

Mathematical

Find Maximum dot product of two arrays with insertion of 0’s

Given two arrays of positive integers of size m and n where m > n. We need to maximize the dot product by inserting zeros… Read More

Directi

Arrays

DSA

Dynamic Programming

Print all the paths from root, with a specified sum in Binary tree

Given a Binary tree and a sum S, print all the paths, starting from root, that sums upto the given sum. Note that this problem… Read More

DSA

Tree

Codenation Interview Experience | Set 4 (Off-Campus for Internship)

I recently applied for the position of an intern as a software developer. Here is my interview experience in brief: The whole interview was classified… Read More

Codenation

Experiences

Internship

Interview Experiences

Goldman Sachs Interview Experience | Set 22 (On-Campus for Analyst profile)

I would like to share my GS interview experience with the prospect of helping upcoming batches. Round 1 – Resume based shortlisting – Basically add… Read More

Goldman Sachs

Experiences

Interview Experiences

Complex numbers in C++ | Set 1

The complex library implements the complex class to contain complex numbers in cartesian form and several functions and overloads to operate with them. real() –… Read More

CPP-Library

cpp-numerics-library

C++

Shopclues Interview Experience | Set 2 (Software Developer)

Recently ShopClues came to our college for Software Developer Position. Here I am sharing my interview experience. There was 1 online round and 4… Read More

Experiences

Interview Experiences

Rail Fence Cipher – Encryption and Decryption

Given a plain-text message and a numeric key, cipher/de-cipher the given text using Rail Fence algorithm. The rail fence cipher (also called a zigzag cipher) is… Read More

cryptography

Algorithms

DSA

Misc

Find minimum number to be divided to make a number a perfect square

Given a positive integer n. Find the minimum number which divide n to make it a perfect square.Examples: Input : n = 50 Output :… Read More

maths-perfect-square

prime-factor

DSA

Mathematical

Commonly Asked Questions in Goldman Sachs Interviews

Reverse words in a given string Number Formation Overlapping rectangles Ugly Numbers Column name from a given column number Stock buy and sell Non Repeating… Read More

Interview Tips

placement preparation

Interview Preparation