Recursion
Process when function calls itself within its own definition/body.
Recursive algorithms are a powerful tool in computer science, allowing us to solve complex problems by breaking them down into smaller, more manageable sub-problems.
A recursive algorithm typically consists of two main parts:
The calculation of a factorial is an algorithm with one recursive call.
Recursive algorithms are particularly useful for problems that can be naturally divided into smaller sub-problems. They are often used in situations where:
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public class Main{ public static int factorial(int n){ System.out.println("Called factorial with n = " + n); // for tracing if (n==1){ // base case (termination condition) return 1; } return n * factorial(n-1); } public static void main(String[] args){ int res = factorial(5); System.out.println("Result: " + res); }}