Question

Java

Write the method rightN. The method has two inputs: a String str and an int n. The output of the method is a new String that contains a "rotated right n" version of str. You can assume that the length of str will be at least n. Here is some sample input and output:

• rightN("Hello", 2) → "loHel"
• rightN("Chocolate", 3) → "ateChocol "
• rightN("Chocolate", 1) → "eChocolat"

Answer 1

// TestCode.java
public class TestCode {
    public static String rightN(String s, int n){
        return s.substring(s.length()-n)+s.substring(0,s.length()-n);
    }
    public static void main(String args[])
    {
        System.out.println(rightN("hello",2));
        System.out.println(rightN("Chocolate",3));
        System.out.println(rightN("Chocolate",1));
    }
}

public String rightN(String s, int n){
    return s.substring(s.length()-n)+s.substring(0,s.length()-n);
}