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Lowest Common Ancestor of a Binary Search Tree

Given a binary search tree (BST), find the lowest common ancestor (LCA) of two given nodes in the BST. This is a very famous interview problem and previously asked in Microsoft and Amazon.

03 Mar 2020

AfterAcademy Tech

Lowest Common Ancestor of a Binary Tree

Given a binary tree, write a program to find the lowest common ancestor (LCA) of two given nodes in the tree. The question is asked previously in Amazon, Facebook, Adobe and requires an understanding of tree data structure.

03 Mar 2020

AfterAcademy Tech

Find Diameter of Binary Tree

Given a binary tree, you need to compute the length of the diameter of the tree. The diameter of a binary tree is the length of the longest path between any two nodes in a tree. This path may or may not pass through the root.

03 Mar 2020

AfterAcademy Tech

Median of the Two Sorted Array of Same Size

There are two sorted arrays nums1 and nums2 of size n. Find the median of the two sorted arrays.

29 Feb 2020

AfterAcademy Tech

Dynamic Programming vs Greedy Algorithms

These are two very useful and commonly used algorithmic paradigms for optimization and we shall compare the two in this blog and see when to use which approach.

29 Feb 2020

AfterAcademy Tech

Check for Balanced Parentheses in an Expression

This is a famous interview problem asked in companies like Amazon, Microsoft. Here the basic idea is to think of the data structure which can easily solve this problem.

29 Feb 2020

AfterAcademy Tech

Find the Square Root of a given Integer-Interview Problem

Given an integer, your task is to find the square root of the integer. For an integer x to be the square root of the given integer N, x*x must be equal to N. This is an interview problem asked in companies like Amazon, Microsoft and Facebook.

29 Feb 2020

AfterAcademy Tech

What is a localhost?

In this blog, we will learn what is localhost. We will also learn various applications of the localhost.

29 Feb 2020

AfterAcademy Tech

What are the Page Replacement Algorithms?

In this blog, we will learn about various Page Replacement Algorithms that are used in memory management in OS. We will learn about FIFO, LRU, and Optimal page replacement.

29 Feb 2020

AfterAcademy Tech

What are the classes of IPV4? How to identify IP class from a given IP address?

In this blog, we will learn what are the various types of classes in IPv4 and how we can differentiate among the classes on the basis of the number of bits present the network ID and the host ID of these classes.

29 Feb 2020