Description https://leetcode.com/problems/most-common-word/ You are given an array of variable pairs equations and an array of real numbers values, where equations[i] = [Ai, Bi] and values[i] represent the…

Description https://leetcode.com/problems/course-schedule/ There are a total of numCourses courses you have to take, labeled from 0 to numCourses-1. Some courses may have prerequisites, for example…

Description https://leetcode.com/problems/course-schedule-ii/ There are a total of n courses you have to take labelled from 0 to n – 1. Some courses may have prerequisites, for…