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AfterAcademy Tech

Getting started with Express.js

In this tutorial, we are going to learn about Express.js, why it is used, what all features it offers, and how it is used in the development environment. This tutorial will provide you with the most basic and important knowledge that is required in order to use Express in web application servers.

28 May 2020

AfterAcademy Tech

From JavaScript to TypeScript

In this tutorial, we are going to learn about some of the features that TypeScript provides which may or may not be present in JavaScript and are important to know if you are migrating from JavaScript to TypeScript.

15 May 2020

AfterAcademy Tech

NPM vs Yarn

npm and Yarn are two very popular and highly used package managers and we discuss on the comparisons between the two in this blog

11 May 2020

AfterAcademy Tech

Binary Tree Zig Zag Level Order Traversal

Given a binary tree, return the zigzag level order traversal of its nodes' values. (i.e, from left to right, then right to left for the next level and alternate between). The problem is a typical Interview problem based on Tree Traversal

04 May 2020

AfterAcademy Tech

Topological Sorting

In this blog, we will discuss Topological sort in a Directed Acyclic Graph. We will discuss what is the Topological Sort, how can we find Topological Ordering, Illustration using a Directed Acyclic Graph, its pseudo-code, and its applications.

01 May 2020

AfterAcademy Tech

Optimal Substructure and Overlapping Subproblems

In this blog, we will understand the optimal substructure and overlapping subproblems property. We will also discuss how the problems having these two properties can be solved using Dynamic programming.

01 May 2020

AfterAcademy Tech

Merge Overlapping Intervals

You will be given a set of intervals in the form of a 2-D array, write a program to merge all the overlapping intervals, and return the array. This problem will clear the concept of intervals and Graph

01 May 2020

AfterAcademy Tech

Path Sum In Binary Tree

Given a binary tree and a sum, write a program to determine if the tree has a root-to-leaf path such that adding up all the values along the path equals the given sum.Its an easy problem based on Binary tree traversal and a famous interview question

01 May 2020

AfterAcademy Tech

Maximum Product Of Three Numbers

write a program to find three numbers whose product is maximum and output the maximum product. This is a basic mathematical problem and requires logical skill to solve.

01 May 2020

AfterAcademy Tech

Check If Two Arrays Are Equal Or Not

Given two given arrays of equal length, Check if given arrays are equal or not. This is a tricky interview problem as, at first, this looks like problem-related to combinatorics but could be solved quickly upon thinking.

01 May 2020