Complexity classes are categories used in computational theory to classify problems based on the resources needed to solve them, such as time and space. They help in understanding how difficult a problem is to solve, depending on the computational model used. ### Key Complexity Classes: 1. **P (Polynomial Time)**: - Contains decision problems that can be solved by a deterministic Turing machine in polynomial time. Problems in P are generally considered "efficiently solvable.
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A complexity class is a collection of computational problems sharing specified resource bounds and a computational model.
