Recursion java

Java recursion

public static long factorial(int n) { 
    if (n == 1) return 1; //base case
    return n * factorial(n-1); 
}

Source: introcs.cs.princeton.edu

Recursion examples Java

public static void countDown(int number){
        if (number == 0) {
            System.out.println(number);
        } else {
            System.out.println(number);
            countDown(number - 1);
        }
 }

Source: java67.com

Recursion java

    public static  int exponent(int n){
        int ans;
        if(n == 0)
            return 1;
        else if(n%2 == 0){
            int k = exponent(n/2);
            ans = k*k;
        }
        ans= 2 * exponent(n-1);

        return ans ;
    }

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