diff --git a/.gitignore b/.gitignore
index 562b66d..29668e3 100644
--- a/.gitignore
+++ b/.gitignore
@@ -1,2 +1,6 @@
 .idea/
-out/
\ No newline at end of file
+out/
+/bin/
+.project
+.classpath
+.bin
\ No newline at end of file
diff --git a/src/lsystem/Main.java b/src/lsystem/Main.java
index dcba497..d769669 100644
--- a/src/lsystem/Main.java
+++ b/src/lsystem/Main.java
@@ -22,6 +22,8 @@ public class Main {
                 rules.add(scanner.next());
             }
             rules.remove(rules.size() - 1);
+            System.out.println("Nombre d'itérations: ");
+            nbIterations = scanner.nextInt();
             parser = new Parser(axiom, rules,nbIterations);
         }
 
diff --git a/src/lsystem/engine/parser/Parser.java b/src/lsystem/engine/parser/Parser.java
index febec65..75745ff 100644
--- a/src/lsystem/engine/parser/Parser.java
+++ b/src/lsystem/engine/parser/Parser.java
@@ -7,7 +7,7 @@ public class Parser {
     private final String axiom;
     private final List<String> rules;
     private final int nbIterations;
-    private String[] validStrings = {"]","[",".","+","-","X","Y","Z","x","y","z","0","1","2","3","4","5","6","7","8","9"};
+    private char[] validChars = {'=',']','[','.','+','-','X','Y','Z','x','y','z','0','1','2','3','4','5','6','7','8','9',' '};
 
     public Parser(String axiom, List<String> rules,int nbIterations) {
         this.axiom = axiom;
@@ -16,40 +16,43 @@ public class Parser {
     }
 
     public boolean isCorrect(){
-    	return (rulesCorrect() || axiomCorrect());
-    }
-    private boolean axiomCorrect() {
-		
-		return false;
-	}
-
-	public boolean rulesCorrect() {
-    	for(String r : this.rules) {
-    		String[] stringsplitted = r.split("");
-	        String old = null;
-	        int bracket = 0;
-	        for (String rules : stringsplitted){
-	            for(String string : validStrings){
-	            	if (rules == "[")
-	            		bracket += 1;
-	            	if(rules =="]")
-	            		bracket -=1;
-	                if(old == "."){
-	                    for(int i = 0;i<10;i++){
-	                        if(rules == validStrings[i])
-	                            return false;
-	                    }
-	                }
-	                old = rules;
-	                if(rules == string)
-	                    break;
-	                if(string == "9" && rules != string)
-	                    return false;
-	            }
-	        }
-	    	if (bracket != 0)
-	    		return false;
+    	if (nbIterations == 0) {
+    		System.out.println("Erreur, nombre d'itérations inssufissant (plus petit que 1)");
+    		return false;
     	}
-        return true;
+    	 boolean bl = isCorrect(axiom);
+    	 for(String rule : this.rules){
+    		 bl = bl && isCorrect(rule);
+    	 }
+    	 return bl;
     }
+    private boolean isCorrect(String stringToCheck) {
+
+    	char old = ' ';
+        int bracket = 0;
+        for (int i =0; i>stringToCheck.length();i++){
+        	char temp = stringToCheck.charAt(i);
+            for(char validChar : validChars){
+            	if (temp == '[')
+            		bracket += 1;
+            	if(temp ==']')
+            		bracket -=1;
+                if(old == '.'){
+                    for(int y = 0;y<12;y++){
+                        if(temp == validChars[y])
+                            return false;
+                    }
+                }
+                old = temp;
+                if(temp == validChar)
+                    break;
+                if(validChar == ' ' && temp != validChar)
+                    return false;
+            }
+        }
+    	if (bracket != 0)
+    		return false;
+    	return true;
+	}
+    
 }