Use DFS version of topological sort for the following DAG Practice problem: use DFS version of topological sort for the followingDAGDFS(G)J61for each vertex u e G. VJ1J2(J5J72u.color = WHITE3u.N = NIL4 time = 05 for each vertex u e G. Vif u.color == WHITEDFS-VISIT (G, u)J3J47DFS-VISIT (G, u)time = time +112 u.d = timeTOPOLOGICAL-SORT(G)3u.color = GRAY4 for each v e G.Adj[u]1 call DFS(G) to compute finishing times v.f for each vertex v2 as each vertex is finished, insert it onto the front of a linked listif v.color == WHITEv.A = uDFS-VISIT (G, v)8 u.color = BLACK9 time = time + 110 u.f = time3 return the linked list of vertices

Topological_Sort: The graph is passed to DFG(G) function. Each vertex is checked for white colour.…

Practice problem: use DFS version of topological sort for the following DAG J6 DFS(G) I for each vertex u e G. V J1 J2 (J5 J7 u.color = WHITE u.A = NIL 4 time = 0 5 for each vertex u e G. V 6. if u.color == WHITE DFS-VISIT (G, u) J3 J4 DFS-VISIT (G. u) 1 time = time +1 2 u.d = time 3 u.color = GRAY 4 for each v eG.Adj[u] TOPOLOGICAL-SORT(G) 1 call DFS(G) to compute finishing times v.f for each vertex v 2 as each vertex is finished, insert it onto the front of a linked list 5 if v.color == WHITE v.A = u 7 DFS-VISIT (G, v) 8 u.color = BLACK 9 time = time +1 return the linked list of vertices 10 u.f = time

Practice problem: use DFS version of topological sort for the following DAG J6 DFS(G) I for each vertex u e G. V J1 J2 (J5 J7 u.color = WHITE u.A = NIL 4 time = 0 5 for each vertex u e G. V 6. if u.color == WHITE DFS-VISIT (G, u) J3 J4 DFS-VISIT (G. u) 1 time = time +1 2 u.d = time 3 u.color = GRAY 4 for each v eG.Adj[u] TOPOLOGICAL-SORT(G) 1 call DFS(G) to compute finishing times v.f for each vertex v 2 as each vertex is finished, insert it onto the front of a linked list 5 if v.color == WHITE v.A = u 7 DFS-VISIT (G, v) 8 u.color = BLACK 9 time = time +1 return the linked list of vertices 10 u.f = time

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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