The core of the program is the algorithm. For example, in the case of the same performance of computer hardware, the algorithm of software plays an almost decisive role. All computer software and hardware programming requires algorithms. Even though we didn't use an algorithm when compiling the hello world program, it is an algorithm when compiling and running it and then displaying it on the screen. Algorithm is the core of computer and even nature. If you know the algorithm of the human brain, you can make artificial intelligence software.

There are too many algorithms to enumerate. There are specific usages. You should be able to find them by reading books or searching online, such as greedy algorithm, ant colony algorithm, genetic algorithm, evolutionary algorithm, culture-based genetic algorithm, tabu algorithm, Monte Carlo algorithm, chaotic random algorithm, sequence number theory algorithm, particle swarm optimization algorithm, simulated annealing algorithm and so on.