Sum Of First N Numbers Recursion Program

5. Sum Of First N Numbers Recursion Program:
Java Script:
Program:

function bag(n) {
    if (n == 1)
        return 1;

    return n + bag(n - 1);
}

console.log(bag(10));

Output:

Java:
Program:

class Main {

    static int sum(int n) {
        if (n == 1)
            return 1;

        return n + sum(n - 1);
    }

    public static void main(String[] args) {
        System.out.println(sum(10));
    }
}

Python:
Program:

def sum(n):
    if n == 1:
        return 1

    return n + sum(n-1)

print(sum(10))