Exact cover

In mathematics, given a collection of subsets of a set X, an exact cover is a subcollection of such that each element in X is contained in exactly one subset in .One says that each element in X is covered by exactly one subset in .An exact cover is a kind of cover. In computer science, the exact cover problem is a decision problem to determine if an exact cover exists.The exact cover problem is NP-completeand is one of Karp's 21 NP-complete problems.The exact cover problem is a kind of constraint satisfaction problem.

Exact cover

In mathematics, given a collection of subsets of a set X, an exact cover is a subcollection of such that each element in X is contained in exactly one subset in .One says that each element in X is covered by exactly one subset in .An exact cover is a kind of cover. In computer science, the exact cover problem is a decision problem to determine if an exact cover exists.The exact cover problem is NP-completeand is one of Karp's 21 NP-complete problems.The exact cover problem is a kind of constraint satisfaction problem.