public static void changeString(String in){
            String out[] = in.split(" ");

            for(int j = 0; j < out.length; j++){
                for(int i = 1; i < out[j].length(); i = i+2){
                    System.out.print(out[j].charAt(i));
                    System.out.print(out[j].charAt(i-1));
                }
                if(out[j].length() % 2 != 0){
                    System.out.print(out[j].charAt(out[j].length()-1));
                }
                System.out.print(" ");
            }

        }