Worst case is the worst case time complexity of Prim’s algorithm if adjacency matrix is used?(a) O(log V)(b) O(V^2)(c) O(E^2)(d) O(V log E)I had been asked this question during an interview.Query is from Minimum Spanning Tree topic in portion Minimum Spanning Tree of Data Structures & Algorithms II

Worst case is the worst case time complexity of Prim’s algorithm if

1.	Worst case is the worst case time complexity of Prim’s algorithm if adjacency matrix is used?(a) O(log V)(b) O(V^2)(c) O(E^2)(d) O(V log E)I had been asked this question during an interview.Query is from Minimum Spanning Tree topic in portion Minimum Spanning Tree of Data Structures & Algorithms II
Answer» Right answer is (b) O(V^2) The explanation is: Use of adjacency matrix provides the SIMPLE IMPLEMENTATION of the Prim’s algorithm. In Prim’s algorithm, we need to SEARCH for the EDGE with a minimum for that VERTEX. So, worst case time complexity will be O(V^2), where V is the number of vertices.

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