Plz do it soon i will give u like instant Code in Java please There are a total of numCourses courses you have to take, labeled from 0 to numCourses - 1. Youare given an array prerequisites where prerequisites [i] = [a, b] indicates thatyou must take course be first if you want to take course a..For example, the pair [0, 1], indicates that to take course 0 you have to first take course 1.Return the ordering of courses you should take to finish all courses. If there are many valid answers,return any of them. If it is impossible to finish all courses, return an empty array.Example 1:Input: numCourses = 2, prerequisites = [[1,0]]Output: [0,1]Explanation: There are a total of 2 courses to take. To take course 1 you should havefinished course 0. So the correct course order is [0,1].Example 2:Input: numCourses = 4, prerequisites = [[1,0], [2,0],[3,1],[3,2]]Output: [0,2,1,3]Explanation: There are a total of 4 courses to take. To take course 3 you should havefinished both courses 1 and 2. Both courses 1 and 2 should be taken after youfinished course 0.So one correct course order is [0,1,2,3]. Another correct ordering is [0,2,1,3].Example 3:Input: numCourses = 1, prerequisites =[]Output: [0]Constraints:●●●●1 <= numCourses <= 20000 <= prerequisites.length <= numCourses (numCourses - 1)prerequisites [i].length == 20 <= a₁, b₁ < numCoursesa₁ != b₁All the pairs [a, b] are distinct.* 1. What is the runtime complexity of your solution?2. What is the space complexity of your solution?3. What data structure you have used to solve this problem?4. Is your solution optimum? If not, what may be the optimumsolution?

Here is the solution. We try to solve it using DFS. What it will do is hat it will perform…

1. What is the runtime complexity of your solution? 2. What is the space complexity of your solution? 4. 3. What data structure you have used to solve this problem? Is your solution optimum? If not, what may be the optimum solution?

1. What is the runtime complexity of your solution? 2. What is the space complexity of your solution? 4. 3. What data structure you have used to solve this problem? Is your solution optimum? If not, what may be the optimum solution?

Computer Networking: A Top-Down Approach (7th Edition)

7th Edition

ISBN:9780133594140

Author:James Kurose, Keith Ross

Publisher:James Kurose, Keith Ross

Chapter1: Computer Networks And The Internet

Section: Chapter Questions

Problem R1RQ: What is the difference between a host and an end system? List several different types of end...

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