Introduction to Algorithms
Introduction to Algorithms
3rd Edition
ISBN: 9780262033848
Author: Thomas H. Cormen, Ronald L. Rivest, Charles E. Leiserson, Clifford Stein
Publisher: MIT Press
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Chapter 22.5, Problem 5E
Program Plan Intro

To evaluate that the component graph of the directed graph G ( V, E ) takeO ( V + E ) time and make sure that there is almost one edge between the two vertices.

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In this problem you will design an algorithm that takes as input a directed acyclic graph G = (V,E) and two vertices s and t, and returns the number of simple paths from s tot in G. For example, the directed acyclic graph below contains exactly four simple paths from vertex p to vertex v: pov, poryv, posryv, and psryv. Notice: your algorithm needs only to count the simple paths, not list them. m y W Design a recursive backtracking (brute-force) algorithm that determines the number of paths from s to t. Write down the pseudocode of your algorithm and prove its correctness, i.e., convince us that it works beyond any doubt. (Hint: using induction.).
We are given an undirected connected graph G = (V, E) and vertices s and t.Initially, there is a robot at position s and we want to move this robot to position t by moving it along theedges of the graph; at any time step, we can move the robot to one of the neighboring vertices and the robotwill reach that vertex in the next time step.However, we have a problem: at every time step, a subset of vertices of this graph undergo maintenance andif the robot is on one of these vertices at this time step, it will be destroyed (!). Luckily, we are given theschedule of the maintenance for the next T time steps in an array M [1 : T ], where each M [i] is a linked-listof the vertices that undergo maintenance at time step i.Design an algorithm that finds a route for the robot to go from s to t in at most T seconds so that at notime i, the robot is on one of the maintained vertices, or output that this is not possible. The runtime ofyour algorithm should ideally be O((n + m) ·T ) but you will…
Draw a simple, connected, weighted graph with 8 vertices and 16 edges, each with unique edge weights. Identify one vertex as a “start” vertex and illustrate a running of Dijkstra’s algorithm on this graph. Problem R-14.23 in the photo
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