Design a food rating system that allows modification of food ratings and can return the highest-rated food item for a given cuisine. In case of a tie, the lexicographically smallest food item should be returned.
You are given two 2D integer arrays, items1 and items2, each representing a set of items. Each item has a value and a weight. You need to combine both arrays by summing the weights of items with the same value, and return the result as a 2D array, sorted by the item values in ascending order.
You are given a stream of n distinct videos, each represented by a unique number from 1 to n. You need to design a data structure that tracks the longest prefix of uploaded videos at any point in time. A prefix is considered uploaded if all videos from 1 to i (inclusive) have been uploaded to the server.
You are given a 0-indexed integer array ’nums’. A subarray of ’nums’ is called continuous if the absolute difference between any two elements in the subarray is less than or equal to 2. Return the total number of continuous subarrays.
You are given a 0-indexed integer array nums and an integer x. Find the minimum absolute difference between two elements in the array such that their indices are at least x apart.