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Python comes in very handy when dealing with data, for data crunching, machine learning, interactions on the web. Today we aim to make a authentication mechanism using Python. Using python dictionaries to simulate database for user information . G…

It is one of advanced level java interview questions- Device an algorithm to merge list of Iterators into a single Iterator . Google guava provides collections framework which does it in couple of lines. Below lines shows how to merge multiple itera…

Python provides os module which can be used to perform File operations like - create, read, write and delete. Below program performs following operation - 1. Check for a directory and create if it does not exist 2. Create a file . 3. Write into fi…

Problem statement: Find median of stream of numbers numbers. Reference GeeksForGeeks Median is defined as middle element of sorted elements (even count of numbers) / mean of two middle elements(odd count of numbers) Consider array of numbers as st…

Do You Want to Become a Big Data Hadoop Expert? Hadoop is one of the most sought-after skills today. Big data professionals are asked to prove their skills with tools and techniques of Hadoop stack. It has been observed by the market analyzers that …

1. What is Hadoop and how it is related to Big data ? Answer :-  In 2012, Gartner updated its definition as follows: "Big data is high volume, high velocity, and/or high variety information assets that require new forms of processing to enable …