public static String funnyString(String s) {
    
        StringBuilder build = new StringBuilder(s);
        String revStr = build.reverse().toString();
        
        int n = s.length();
        char[] firstStr = s.toCharArray();
        char[] secondStr = revStr.toCharArray();
        
        for(int i=0; i<n-1; i++){
            
            int diff1 = Math.abs((int)firstStr[i] - (int)firstStr[i+1]);
            int diff2 = Math.abs((int)secondStr[i] - (int)secondStr[i+1]);
            
            if(diff1 != diff2){
                return "Not Funny";
            }
            
        }
        return "Funny";

    }