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Amplitude Interview Questions

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Implement a Binary Search Tree

Let's implement a Binary Search Tree ! Recall that a binary search tree , or a BST , is a binary tree lessons an intro to binary trees and search trees that is ordered via these two properties: 1. The left sub tree of a node has a value less than or equal to its parent node's value. 2. The ...

Difficulty: 6/10

Grab a Random Node

Given a linked list, can you write a method to get a random node within it? Let's assume you're given a random node generator. The linked list will have at least 2 nodes, and may look something like this: 1 2 3 4 The odds of getting any number between 1 and 4 inclusive should b...

Difficulty: 4/10

Fast Minimum In Rotated Array

We're given an array of integers that looks like the following: js 0, 1, 2, 3, 4, 5, 6, 7, 8 Let's imagine we're an assembly line and we decide to shift some workers around. Say we take our array, and rotate it at a random pivot so that the section after the pivot comes before. Le...

Difficulty: 4/10

Hoisting and Call Stack

Understanding Variable Scoping in JavaScript Let's dig into a fascinating JavaScript example to unravel the mystery of variable scoping. The Code Snippet Here's the code we'll be examining: javascript var numOfBeers 5 function getMoreBeers console.log 'I have this many beers: ...

Difficulty: 7/10

Linked List to Binary Search Tree

We're given a sorted singly linked list that is, a linked list made of nodes with no pointers to the previous node where the elements are already arranged in ascending order. js 9 2 3 5 9 Linked List Node Definition: function Node val this.val val this...

Difficulty: 7/10

Longest Substring With No Duplicate Characters

Given a string of characters, can you find the longest substring of the string that has no repeating characters? An example is shown below: js lengthOfLongestSubstring "abracadabar" 4 because it is 'brac' Constraints Length of the string 100000 The string ...

Difficulty: 5/10

Levenshtein Edit Distance

An edit distance is a way to quantify how different two strings are. This is calculated using **the minimum number of transformations to turn one string to another**. The transformations include insertion , deletion , and substitution . So when comparing two identical strings, say cat and ca...

Difficulty: 7/10

Counting Univalued Subtrees

Question Can you count all the univalued subtrees in a binary tree, as shown in the figure below? The Problem We are given a binary tree. The challenge is to count all the univalued subtrees in the tree. Just to recall, a subtree is any node along with its descendants. The root...

Difficulty: 6/10

Association, Aggregation, Composition and Casting in OOP

Association, Aggregation, and Composition in Object Oriented Programming In today's lesson, we will learn relational concepts in object oriented programming. You can find several definitions of **association, composition, and aggregation** on the Internet but most of them have convoluted explana...

Difficulty: 5/10

Discovering Your Money Voice

**Unlock Your Full Potential with AlgoDaily!** We hope you're enjoying this course. At AlgoDaily, our aim is to transform complex coding challenges into engaging, bite sized lessons. And while our free lessons give you a glimpse of this transformative experience, there's so much more in store. ...

Difficulty: 5/10

Data Modeling and Design

Introduction to Data Modeling Data modeling is a crucial aspect of data engineering that involves designing the structure of a database and defining the relationships between different data entities. It serves as a blueprint for storing, organizing, and manipulating data efficiently. In the fi...

Difficulty: 5/10

How Do We Get a Balanced Binary Tree?

The Marvel of Binary Trees: Understanding the Basics What is a Binary Tree? A **Binary Tree** is a specialized tree structure where each node has, at most, two child nodes. Interestingly, a binary tree can also be empty, meaning it has zero nodes. The Recursive Nature of Binary Tree...

Difficulty: 5/10

Interview Reports

Amplitude Engineering Culture | Key Values...

Engineers at Amplitude talk about their culture, key values, current team members, open jobs, and what it is like working at Amplitude.

Aptitude Test: 20 Free Practice Questions & Tips...

Aptitude test: what is it, how you can prepare, and free online aptitude test practice questions.

TOP 250+ Amplitude modulation (AM) Interview Questions and Answers 12 May 2...

250+ Amplitude Modulation (am) Interview Questions and Answers, Question1: What is modulation and demodulation ? Question2: Explain the need of modulation and demodulation ? Question3: What is analog ...