What is P-Problem? What is NP-Problem? What is NP-Complete problem?

What is P-Problem?

What is NP-Problem?

What is NP-Complete problem?

Expert Solution

ANSWER: P- Polynomial time solving . Problems which can be solved in polynomial time, which take time like O(n), O(n2), O(n3). Eg: finding maximum element in an array or to check whether a string is palindrome or not. so there are many problems which can be solved in polynomial time.

NP- Non deterministic Polynomial time solving. Problem which can't be solved in polynomial time like TSP( travelling salesman problem) or An easy example of this is subset sum: given a set of numbers, does there exist a subset whose sum is zero.

NP-Complete -- The group of problems which are both in NP and NP-hard are known as NP-Complete problem.

Now suppose we have a NP-Complete problem R and it is reducible to Q then Q is at least as hard as R and since R is an NP-hard problem. therefore Q will also be at least NP-hard , it may be NP-complete also.

venereology answered 2 years ago

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