Max Altitude of Islands Given an m x n 2D grid which represents a map where positive integers represent elevation of land and 0 ‘s represent water, retu…

SQL to Get Top 10 Selling Categories by Total Sales in 2024 category ( category_id INTEGER PRIMARY KEY, category_name VARCHAR(100) NOT NULL ) table ( pr…

This set of SQL interview questions uses a bookstore database with the following tables: books , authors , transactions , and customers . books book_id…

The self-service point-of-sale system you are implementing is a customer-facing touch-screen kiosk, positioned in a fast-food restaurant for customers t…

Meta VO Interview Question: Carpooling Value Proposition, Metrics, and Data Model Design A ride-share service allows customers to use an app to request…

Given an integer array nums , find a peak element, and return its index. A peak element is an element that is strictly greater than its neighbors. You m…

Map Equivalence Geographical maps representing land and water forms can be stored in the form of a grid where 1 represents land and 0 represents water….

Credits Implement the Credits class, which should support the following operations: granting credits, subtracting credits, and getting the balance for a…

Implement 2 functions: A’ = encode(A) takes in a string (ASCII only) that represents the document A , and returns the binary string representation of th…

An Amazon pickup location has a set number of lockers in which boxes are dropped off and picked up. Boxes can come in many different sizes. Lockers come…

There are three companies: IBM, Intel, and Apple. A total of 8 people worked in these three companies. Each person can be either a manager or a direct r…

You are developing an online game where 2 users can play against each other. We want to create a service which will match users with similar ranks so th…

You are given a series of packages arranged on a conveyor belt. Each package has a specific weight, represented by the array weights , where the i th el…

Edit distance between 2 strings with dictionary-based cost 这道题本质上是经典编辑距离的变体：给定两个字符串，需要通过插入、删除、替换等操作把一个字符串变成另一个字符串，但每种操作的代价不是固定值，而是由字典规则决定。解题时通常用动态规划来维护前…

Given two integer arrays nums1 and nums2 , find their intersection. Example 1: nums1: [1, 2, 3, 4] nums2: [1, 2] result: [1, 2] 这道题要求找出两个整数数组的交集，核心思路通常是…

We are writing software to collect and manage data on how fast racers can complete obstacle courses. An obstacle course is a series of difficult physica…

ModalVector vector1 = [1.0, 1.0, 1.0, 2.0, 0.0, 1.0] vector2 = [4.0, 4.0, 2.0, 4.0, 4.0, 0.0] vector1.dot(vector2) = 1*4 + 1*4 + 1*2 + 2*4 + 0*4 + 1*0 =…

You have to paint all the houses such that no two adjacent houses have the same color. The cost of painting each house with a certain color is represent…

Create a REST API that exposes the following endpoint: GET /api/bootstrap Request Input User Id Response Address Data: address including the user’s name…

Given a binary tree, create two functions: one that serializes the binary tree into a string and one that deserializes a serialized string back into a b…