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analyzer2.java
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analyzer2.java
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public class tp1 {
private int i;
private String c;
public tp1(String c) {
this.i=0;
this.c= c+ "#";
}
public void Z() {
S();
if (c.charAt(i) == '#' && i == c.length()-1) {
System.out.println("chaine accepter ");
} else {
System.out.println("chaine erronée ");
}
}
public void S(){
if(c.charAt(i)=='c'){
C();
S();
if(c.charAt(i)=='d'){
i++;
} else {
erreur();
}
}
else
if(c.charAt(i)=='a') {
A();
B();
}
else
if(c.charAt(i)=='b') {
B();
} else
if(c.charAt(i)=='d'&& c.length()-1 == 1) {
i++;
}
}
public void A() {
if(c.charAt(i)=='a'){
i++;
A();
} if(c.charAt(i)=='b'){
i++;
} else {
erreur();
}
}
public void B() {
if(c.charAt(i)=='b'){
i++;
B();
}
}
public void C() {
if(c.charAt(i)=='c'){
i++;
C();
}
}
public void erreur (){
System.out.println("erreur");
System.exit(0);
}
public static void main(String[] args) {
System.out.println("donner");
Scanner e = new Scanner (System.in);
String c = e.nextLine();
tp1 t = new tp1(c);
t.Z();
}
}