Method isRotation

java/Chapter 1/Question1_8/Question.java:12–21

(String s1, String s2)

	}
	
	public static boolean isRotation(String s1, String s2) {
	    int len = s1.length();
	    /* check that s1 and s2 are equal length and not empty */
	    if (len == s2.length() && len > 0) { 
	    	/* concatenate s1 and s1 within new buffer */
	    	String s1s1 = s1 + s1;
	    	return isSubstring(s1s1, s2);
	    }
	    return false;
	}
	
	public static void main(String[] args) {
		String[][] pairs = {{"apple", "pleap"}, {"waterbottle", "erbottlewat"}, {"camera", "macera"}};