# Tag Archives: Algorithms-NP Complete

In computer science, there exist some problems whose solutions are not yet found, the problems are divided into classes known as Complexity Classes. In complexity… Read More
In computational complexity theory, the Cook–Levin theorem, also known as Cook’s theorem, states that the Boolean satisfiability problem is NP-complete. That is, it is in… Read More
Prerequisite: NP-Completeness, Clique problem. A clique in a graph is a set of vertices where each vertex shares an edge with every other vertex. Thus,… Read More
Prerequisite: NP-Completeness, Independent set. An Independent Set S of graph G = (V, E) is a set of vertices such that no two vertices in… Read More
Prerequisite: NP-Completeness, Hamiltonian cycle. Hamiltonian Cycle: A cycle in an undirected graph G =(V, E) which traverses every vertex exactly once. Problem Statement:Given a graph… Read More
Prerequisite: NP-Completeness A clique is a subgraph of a graph such that all the vertices in this subgraph are connected with each other that is… Read More
Subgraph Isomorphism Problem: We have two undirected graphs G1 and G2. The problem is to check whether G1 is isomorphic to a subgraph of G2.… Read More
Prerequisite: NP-Completeness  NP Problem: The NP problems set of problems whose solutions are hard to find but easy to verify and are solved by Non-Deterministic Machine… Read More
Prerequisite – Vertex Cover Problem, NP-Completeness Problem – Given a graph G(V, E) and a positive integer k, the problem is to find whether there… Read More
Which of the following is true about NP-Complete and NP-Hard problems. (A) If we want to prove that a problem X is NP-Hard, we take… Read More
Which of the following statements are TRUE? (1) The problem of determining whether there exists a cycle in an undirected graph is in P. (2)… Read More
The problem 3-SAT and 2-SAT are (A) both in P (B) both NP complete (C) NP-complete and in P respectively (D) undecidable and NP-complete respectively… Read More
Let X be a problem that belongs to the class NP. Then which one of the following is TRUE? (A) There is no polynomial time… Read More
Let S be an NP-complete problem and Q and R be two other problems not known to be in NP. Q is polynomial time reducible… Read More
Assuming P != NP, which of the following is true ? (A) NP-complete = NP (B) NP-complete P = (C) NP-hard = NP (D) P… Read More