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Recursion.java

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import java.io.*;

import java.math.*;

import java.security.*;

import java.text.*;

import java.util.*;

import java.util.concurrent.*;

import java.util.regex.*;

public class Solution {

// Complete the factorial function below.

public static int factorial(int n) {

if(n<=1)

{

return 1;

}

else

{

return n * factorial(n-1);

}

}

private static final Scanner scanner = new Scanner(System.in);

public static void main(String[] args) throws IOException {

BufferedWriter bufferedWriter = new BufferedWriter(new FileWriter(System.getenv("OUTPUT_PATH")));

int n = scanner.nextInt();

scanner.skip("(\r\n|[\n\r\u2028\u2029\u0085])?");

int result = factorial(n);

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

bufferedWriter.newLine();

bufferedWriter.close();

scanner.close();

}

}