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AfterAcademy Tech

Spiral Order Traversal of a Matrix

Given a matrix or a 2-d array, you have to traverse the matrix in a spiral order. This is an interview question asked by companies like Microsoft and Amazon.

19 Dec 2019

AfterAcademy Tech

Maximum path sum in a binary tree

Given a non-empty binary tree, find maximum path sum. For this problem, a path is defined as any sequence of nodes from some starting node to any node in the tree along with the parent-child connections.

19 Dec 2019

AfterAcademy Tech

What is the two pointer technique?

Two pointer approach is an essential part of a programmer’s toolkit, especially in technical interviews.

18 Dec 2019

AfterAcademy Tech

Time and Space Complexity Analysis of Algorithm

In this blog, we will learn about the time and space complexity of an Algorithm. We will learn about worst case, average case, and best case of an algorithm. We will also see various asymptotic notations that are used to analyse an algorithm. So, let's learn the algorithm of an algorithm.

18 Dec 2019

AfterAcademy Tech

What is a Schema?

In this blog, we will be learning what is a schema in the database. Also, we will study about various types of schema and how it is related to data abstraction. We will take various examples to understand this in detail.

17 Dec 2019

AfterAcademy Tech

What is iteration in programming?

The repeated execution of some groups of code statements in a program is called iteration. We will discuss the idea of iteration in detail in this blog.

17 Dec 2019

AfterAcademy Tech

Divide and Conquer Approach in Programming

In this blog, we will go into the insights of the famous problem-solving approach Divide and Conquer. We will discuss problems like binary search, merge sort and also implementation issues that can come in this approach.

16 Dec 2019

AfterAcademy Tech

What is relational algebra?

In this blog, we are going to learn about various operations that are available in relational algebra and how they are going to help us to retrieve the data from the database with the help of examples.

16 Dec 2019

AfterAcademy Tech

What is a network and what are the nodes present in a network?

In this blog, we will mainly learn about a computer network and its node. We will also cover the classification, goals, and applications of a computer network.

16 Dec 2019

AfterAcademy Tech

What is Data Integrity?

In this blog, we are going to learn what is data integrity. We will also learn that why data integrity is important and how we can achieve it using various integrity constraints.

13 Dec 2019