Cách sử dụng
Recursion is a word that is used in computer programming to describe a process where a function calls itself over and over again. It's similar to a loop, but instead of repeating a set of instructions, the function repeats a specific set of steps until a certain condition is met. For example, if you wanted to calculate the factorial of a number, you could use recursion. The factorial of a number is the product of all the numbers from 1 to that number. So, to find the factorial of 5, you would multiply 5 by the factorial of 4, which is 4 times the factorial of 3, and so on until you reach the factorial of 1, which is just 1. Recursion can be a very powerful tool in programming, but it can also be tricky to use correctly. It's important to make sure your recursive function has a base case, or stopping point, to prevent it from running indefinitely.