def factorial(n): if n <= 1: return 1 else: return n * factorial(n-1)

This is the code I wrote in Python, but I get the error “Function ‘factorial’ not found” every time.

There is something wrong with the default input and output streams provided in Java.

I kept receiving an instant "Compilation Error: 'factorial' method not found" until I replaced the Buffered streams with Scanner for input and used System.out.println to print the result.

You may want to consider this if you encounter a compilation error even though all tests pass.

public static int factorial(int n) {
        if (n <= 1) {
            return 1;
        } else {
            return n * factorial(n - 1);
        }
    }

This is the code I wrote, and I am getting:

Wrong Answer Function 'factorial' not found

import java.io.; import java.math.; import java.security.; import java.text.; import java.util.; import java.util.concurrent.; import java.util.function.; import java.util.regex.; import java.util.stream.*; import static java.util.stream.Collectors.joining; import static java.util.stream.Collectors.toList;

class Result {

/*
 * Complete the 'factorial' function below.
 *
 * The function is expected to return an INTEGER.
 * The function accepts INTEGER n as parameter.
 */

public static int factorial(int n) {
// Write your code here
 int fact = 0;
 if(n <= 1)
 {
     fact =1;
 }
 else{
     fact = n * factorial(n-1);
 }

return fact;
}

}

public class Solution { public static void main(String[] args) throws IOException { BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(System.in)); BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

    int n = Integer.parseInt(bufferedReader.readLine().trim());

    int result = Result.factorial(n);

    bufferedWriter.write(String.valueOf(result));
    bufferedWriter.newLine();

    bufferedReader.close();
    bufferedWriter.close();
}

}

Javascript Shortest soluce :

function factorial(n) {
    return n<2 ? 1 : n*factorial(n-1)
		}