public class Main {

	/** Autor: netindev **/

	private static int parse=0x3B;

	public static void main(String[] args) {
		char[] ofuscar=encriptar("Olá mundo.");
		System.out.println(new String(ofuscar));
		System.out.println(decriptar(ofuscar));
	}

	public static char[] encriptar(String ofuscar){
		char[]arrayDeChar=ofuscar.toCharArray();
		int[]arrayDeInt=new int[arrayDeChar.length];
		int repetir=~0;while(++repetir<arrayDeChar.length){
			arrayDeInt[repetir]=(int)arrayDeChar[repetir];
		}
		String builder=new String();
		repetir=~0;while(++repetir<arrayDeChar.length){
			builder=builder+(char)parse+(int)arrayDeInt[repetir];
		}
		return builder.toCharArray();
	}

	public static String decriptar(char[] desofuscar){
		char[]arrayDeChar=desofuscar.clone();
		String builder=new String(arrayDeChar);
		String[]split=builder.split(new String()+(char)parse);
		String retornar=new String();
		int repetir=~0;while(++repetir<split.length){
			int inicioDaTabela=~-0x20;while(++inicioDaTabela<0xFF){
				if(split[repetir].equals(new String()+inicioDaTabela))retornar=retornar+(char)inicioDaTabela;
			}
		}
		return retornar;
	}

}