Is there a method to calculate the most optimal algorithm?

Question

Algorithms

Good afternoon,
I want to find a way to find the most optimal ways to solve problems, for example, with known input and output parameters, calculate methods and their order. Mainly for the needs of PC programming. Advise on this topic resources or your ideas.

Answer 1

Neural networks :)

Answer 2

NP complete problem

Answer 3

Briefly, as I understand it, there was such a mathematician Kantor. He proved that infinities come in different sizes. Thus, the infinity of possible programs (machines) has a smaller size than the infinity of problems (tasks). In other words, there is an infinite number of unsolvable problems.