Created
December 7, 2021 19:39
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ROT13
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import java.util.Scanner; | |
public class Rot13 { | |
public static void main(String[] args) { | |
Scanner teclado = new Scanner(System.in); | |
char[] mapa = "ABCDEFGHIJKLMNOPQRSTUVWXYZ".toCharArray(); | |
int chave = 13; | |
System.out.println("ROT13"); | |
while(true){ | |
System.out.println("Digite uma mensagem:"); | |
String mensagemOriginal = teclado.nextLine().toUpperCase(); | |
String mensagemProcessada = ""; | |
for (int i = 0; i < mensagemOriginal.length(); i++) { | |
char letra = mensagemOriginal.charAt(i); | |
boolean eUmCaractere = false; | |
int indice = 0; | |
while (indice < mapa.length) { | |
if (letra == mapa[indice]){ | |
eUmCaractere = true; | |
break; | |
} | |
indice++; | |
} | |
if (eUmCaractere) { | |
int indiceChave = (indice+chave) % mapa.length; | |
mensagemProcessada += mapa[indiceChave]; | |
} else { | |
mensagemProcessada += letra; | |
} | |
} | |
System.out.println("-".repeat(40)); | |
System.out.println(mensagemProcessada); | |
} | |
} | |
} |
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