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Event Loop in Node.js - Concurrency Model

Node.js uses the event-loop and callback mechanism to lift off I/O operations from the javascript's thread to the system's kernel. And in this article we are going to understand how this actually happens.

29 Oct 2019

AfterAcademy Tech

Chrome V8 Engine - Javascript runtime for Node.js

Chrome V8 engine originally run in Chrome web browsers. But later it was used to run the javascript without a browser. Node.js is written in C++ and build on top of Chrome V8 engine, which provides the runtime for the Javascript.

29 Oct 2019

AfterAcademy Tech

Find the majority element in an array - Interview Problem

You are given an array A[] consisting of n elements. You need to find and return the number which appears more than n/2 times.

28 Oct 2019

AfterAcademy Tech

What exactly is API?

In this blog, we will learn about API. We will see what exactly is API and by the end of this blog, you will get the knowledge of APIs with the help of some conceptual and practical example.

22 Oct 2019

AfterAcademy Tech

Remove Duplicates from an unsorted arrray

You are given an unsorted array A[] consisting of N elements and you need to remove all the duplicate elements from the array. All the elements in the resultant array must be unique.

21 Oct 2019

AfterAcademy Tech

Search an element in a sorted and infinite array

You are given a sorted and infinite array A and an element K. You need to search for the element K in the array. If found, return the index of the element, else return -1.

17 Oct 2019

AfterAcademy Tech

Maximum Subarray Sum

You are given an array A[] with n elements. You need to find the maximum sum of a subarray among all subarrays of that array. A subarray of array A[] of length n is a contiguous segment from A[i] through A[j] where 0<= i <= j <= n.

16 Oct 2019

AfterAcademy Tech

Find the kth smallest element in an array

Given an array A[] of n elements and a positive integer K, find the Kth smallest element in the array. It is given that all array elements are distinct.

12 Oct 2019

AfterAcademy Tech

Check if two strings are anagrams of each other - Interview Problem

Given two strings S1 and S2 of size m and n respectively, you need to check whether the two strings are an anagram of each other or not. S1 is an anagram of S2 if the characters of S1 can be rearranged to form S2.

08 Oct 2019

AfterAcademy Tech

Find minimum and maximum value in an array - Interview Problem

Given an array A[] of size n, you need to find the maximum and minimum element present in the array.Your algorithm should make minimum number of comparisons.

06 Oct 2019