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Amplitude Interview Questions

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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

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

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

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

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

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

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

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

Mathematical Concepts for Algo Trading in C++

As a senior engineer interested in alternative algorithms in C , it's important to have a strong foundation in mathematical concepts for algo trading. Mathematical concepts play an essential role in analyzing data, developing trading strategies, and making informed decisions. Understanding concep...

Difficulty: 5/10

Scripting Languages vs Programming Languages

Scripting Languages vs Programming Languages Introduction Quite often, the terms **scripting language** and **programming language** are used interchangeably. However, this is wrong as, _apart from the fact that both languages are used in the software development field, these two terms are v...

Difficulty: 5/10

Introduction to C++

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Difficulty: 5/10

Feature: Software Architectural Patterns & Design Structures

*This lesson was originally featured at Software Architectural Patterns Design Structures https: medium.com ios expert series or interview series software architectural patterns design structures c5692fe8affc . It has been republished here with permission from Nishant Sharma.* Arch...

Difficulty: 5/10

Interview Reports

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 ...