From aa1e9ab878d14cc30bf8deb8036cf23a2a6065ef Mon Sep 17 00:00:00 2001
From: yolou <seri-khane.yolou@etu.u-pec.fr>
Date: Wed, 3 Dec 2025 13:33:24 +0100
Subject: [PATCH] Ajout des fichier exo 0

---
 TP4/Base.java       |  3 +++
 TP4/Exemple.java    | 21 ++++++++++++++++++++
 TP4/MonBrin.java    | 48 +++++++++++++++++++++++++++++++++++++++++++++
 TP4/MonMaillon.java | 21 ++++++++++++++++++++
 4 files changed, 93 insertions(+)
 create mode 100644 TP4/Base.java
 create mode 100644 TP4/Exemple.java
 create mode 100644 TP4/MonBrin.java
 create mode 100644 TP4/MonMaillon.java

diff --git a/TP4/Base.java b/TP4/Base.java
new file mode 100644
index 0000000..db31dc5
--- /dev/null
+++ b/TP4/Base.java
@@ -0,0 +1,3 @@
+public enum Base {
+    A, T, C, G;
+}
diff --git a/TP4/Exemple.java b/TP4/Exemple.java
new file mode 100644
index 0000000..1f5eafd
--- /dev/null
+++ b/TP4/Exemple.java
@@ -0,0 +1,21 @@
+public class Exemple {
+    public static void main(String[] args) {
+
+        MonBrin brin = new MonBrin();
+
+        brin.ajouterFin(Base.G);
+        brin.ajouterFin(Base.C);
+        brin.ajouterFin(Base.T);
+        brin.ajouterFin(Base.T);
+        brin.ajouterFin(Base.A);
+        brin.ajouterFin(Base.G);
+
+        System.out.println(brin); // gcttag
+
+        
+        Iterator<Base> it = brin.iterator();
+        while(it.hasNext()) {
+            System.out.println(it.next());
+        }
+    }
+}
diff --git a/TP4/MonBrin.java b/TP4/MonBrin.java
new file mode 100644
index 0000000..4707f60
--- /dev/null
+++ b/TP4/MonBrin.java
@@ -0,0 +1,48 @@
+public class MonBrin {
+    private MonMaillon head;
+
+    public MonBrin() {
+        this.head = null;
+    }
+
+    // Ajouter une base au début du brin
+    public void ajouterDebut(Base b) {
+        head = new MonMaillon(b, head);
+    }
+
+    // Ajouter une base à la fin du brin
+    public void ajouterFin(Base b) {
+        if (head == null) {
+            head = new MonMaillon(b, null);
+            return;
+        }
+
+        MonMaillon courant = head;
+        while (courant.getNext() != null) {
+            courant = courant.getNext();
+        }
+
+        courant.setNext(new MonMaillon(b, null));
+    }
+
+    public MonMaillon getHead() {
+        return head;
+    }
+
+    // Fournir un itérateur maison
+    public Iterator<Base> iterator() {
+        return new MonBrinIterator(this.head);
+    }
+
+    // Pour affichage du brin entier
+    @Override
+    public String toString() {
+        String s = "";
+        MonMaillon courant = head;
+        while (courant != null) {
+            s += courant.getBase().toString();
+            courant = courant.getNext();
+        }
+        return s.toLowerCase(); // affiche : gcttag
+    }
+}
diff --git a/TP4/MonMaillon.java b/TP4/MonMaillon.java
new file mode 100644
index 0000000..b186fd9
--- /dev/null
+++ b/TP4/MonMaillon.java
@@ -0,0 +1,21 @@
+public class MonMaillon {
+    private Base base;
+    private MonMaillon next;
+
+    public MonMaillon(Base b, MonMaillon suivant) {
+        this.base = b;
+        this.next = suivant;
+    }
+
+    public Base getBase() {
+        return base;
+    }
+
+    public MonMaillon getNext() {
+        return next;
+    }
+
+    public void setNext(MonMaillon n) {
+        this.next = n;
+    }
+}