Find the Minimum and Maximum Number of Nodes Between Critical Points A critical point in a linked list is defined as either a local maxima or a local minima. A node is a local maxima if the curr...
Merge Nodes in Between Zeros You are given the head of a linked list, which contains a series of integers separated by 0’s. The beginning and end of the linked list will have Node.val == 0. For ...
Minimum Difference Between Largest and Smallest Value in Three Moves You are given an integer array nums. In one move, you can choose one element of nums and change it to any value. Return the ...
Intersection of Two Arrays II Given two integer arrays nums1 and nums2, return an array of their intersection. Each element in the result must appear as many times as it shows in both arrays and ...
Three Consecutive Odds Given an integer array arr, return true if there are three consecutive odd numbers in the array. Otherwise, return false. Example 1: **Input:** arr = [2,6,4,1] **Output...
All Ancestors of a Node in a Directed Acyclic Graph You are given a positive integer n representing the number of nodes of a Directed Acyclic Graph (DAG). The nodes are numbered from 0 to n - 1 (...
Maximum Total Importance of Roads You are given an integer n denoting the number of cities in a country. The cities are numbered from 0 to n - 1. You are also given a 2D integer array roads wher...
Grumpy Bookstore Owner There is a bookstore owner that has a store open for n minutes. Every minute, some number of customers enter the store. You are given an integer array customers of length n...
Magnetic Force Between Two Balls In the universe Earth C-137, Rick discovered a special form of magnetic force between two balls if they are put in his new invented basket. Rick has n empty baske...
Minimum Number of Days to Make m Bouquets You are given an integer array bloomDay, an integer m and an integer k. You want to make m bouquets. To make a bouquet, you need to use k adjacent flowe...