You are given an array of integers. Implement a class that can support the following operations: Get the sum of elements in a specific index range Updat…

Count elements in a chemical molecular formula. Examples: H2O {“H”: 2, “O”: 1} H2(CO2)2 {“H”: 2, “C”: 2, “O”: 4} K4(ON(SO3)2)2C5 {“K”: 4, “O”: 14, “N”:…

Merge Intervals Given an array intervals representing a collection of intervals, where each interval is intervals[i] = [start, end] , write a function t…

You are given an array prices where prices[i] is the price of a given stock on the i -th day, and an integer fee representing a transaction fee. Find th…

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…

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…

Decode String Given an encoded string, return its decoded string. The encoding rule is: k[encoded_string] , where the encoded_string inside the square b…

Fetch and Render Questions Question description There is an API that can return question data: https://664353ed6c6a6565870698da.mockapi.io/api/test/ques…

[SQL] What are the top 10 Pop songs based on the engagement rate? Tables: song_df , fact_df Use the tables to find the 10 Pop songs with the highest eng…

Given a balanced parentheses string s , return the score of the string. The score of a balanced parentheses string is based on the following rules: () h…

Given a linked list, write a function to return the top N largest elements in the list. Return the result in descending order. This problem asks for the…

Question description E-commerce detail page Swipe up and down. For each detail page, generate an AI summary by combining the user profile and product in…

Given an array cardTypes where cardTypes[i] is the number of cards of type i , determine the minimum number of additional cards needed so that the cards…

Given an integer n representing the total number of TikTok users, along with two lists, influencers and followers , each of size n . For each index i ,…

1. Heap Operations Complexity A heap is a special type of binary tree in which every parent node is less than or equal to its child node(s) (min-heap) o…

You are given a string chatMessage . Your task is to count the number of substrings of exactly length 3 that contain at least one vowel ( a , e , i , o…

1. Network Sockets Consider two pseudo-code snippets illustrating file transfer mechanisms between a client and a server. Pseudo-code 1 Client: file = o…

1. Handling High Concurrency in Web Server Your web server at TikTok needs to handle a high number of concurrent connections efficiently. Which server a…