Given the standard mapping from English letters to digits on a phone keypad, write a program that outputs all words that can be formed from an n-digit p…

Implement a caching reader for remote file access. A RemoteReader can read bytes from a server by offset and size. Your task is to implement CachingRead…

A = (M, K1) B = (K2, N) Given a util function matmul(X1, X2) , where X1 and X2 can only be tensors of shape (tile_size, tile_size) . Implement tiled_mat…

Given a string s containing just the characters ‘(‘ , ‘)’ , ‘{‘ , ‘}’ , ‘[‘ and ‘]’ , determine if the input string is valid. An input string is valid i…

Light Cells Activation Build a 3×3 grid of light cells (omitting the center cell) where you can click on the cells to activate them, turning them green….

Array a consists of distinct, positive integers and serves as a work array. Array rotate contains a list of integers that define operations on the work…

Problem statement Imagine that you want to schedule a meeting of a certain duration with a coworker. You have access to your calendar and your coworker’…

Complete the finestFoodOutlet function below. The function is expected to return a STRING . The function accepts the following parameters: STRING city I…

Question: Sellers buy items in Walmart during sale events and sell them on Amazon to make money. You have to help a seller make maximum profit for their…

You live in San Francisco city and want to minimize your commute time to the Databricks HQ. Given a 2D matrix of the San Francisco grid and the time as…

Output A: [-100, -1, -1, 0, 5] B: [0] C: [-1, 0, 0] Output: [-100, -1, 0, 5] This problem provides multiple array samples and asks for the final output…

Top K Frequent Elements Description: Given a non-empty array of integers, return up to k most frequent elements. For example: Given [1,2,1,1,2,3] and k…

Calculate Shipping Cost Order: { “country”: “US”, // or “CA” for the CA order “items”: [ { “product”: “mouse”, “quantity”: 20 }, { “product”: “laptop”,…

A transformation sequence from word beginWord to word endWord using a dictionary wordList is a sequence of words beginWord -> s1 -> s2 -> … -…

Design a system that allows multiple users to collaborate on a document. Description For MVP, focus on: Defining back-end APIs for interaction between c…

Return the average of the values in a given range in a binary search tree. Example: [4,11] => avg(6,10,4,9) => return 7.xx This problem asks you to comp…

Can we assume the input is sorted or not? You can sort by the start time of each interval. Merge the overlapping meetings with a loop over the meetings….

Description: Suppose an array sorted in ascending order is rotated at some pivot unknown to you beforehand, for example, [0,1,2,4,5,6,7] might become [4…

For each category, find the top 3 users with the highest total purchase amount. Input format: user_id, category_id, date, amount u1, retail, 20210101, 1…

Design a backend system for an e-commerce website that shows a list of merchandise. The system should focus on the browsing aspect, not on how to make p…