csr_my.java

public static int shiftedDiff(String first, String second){
    if(first.equals(second)){
    	return 0;
    }
	    
    for(int i=0;i<first.length();i++){
    	String temp = first.substring(0, first.length()-1);
    	temp = first.charAt(first.length()-1) + temp;
    	first = temp;
    	if(first.equals(second)){
	    	return i+1;
	    }
    }
    
	return -1;
}