exo1 et 2

src/main/java/Stack.java

+public class Stack {
+    Vector v;
+
+    public Stack (Vector v){
+        this.v =v;
+    }
+
+    void push(int value){
+        v.add(value);
+    }
+    int peek(){
+        return v.get(v.);
+    }
+
+    int pop(){
+
+    }
+
+    int size(){
+        return v.size();
+    }
+}

src/main/java/Vector.java

+import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.Collection;
+import java.util.List;
 
 /**
  * La classe Vector implémente un tableau d'entiers * de taille dynamique. Les éléments du
@@ -66,13 +69,20 @@ public class Vector {
 
     public int size() { return this.elements.length; }
     public boolean isEmpty() {
-        return if(this.size >0);
-        if (this.size > 0){return true;} ;
+        if (this.size == 0){return true;} ;
         return false;
     }
     public void add(int element) {
-        elements.length =;
+        int[] tab = new int [elements.length+1];
+        System.arraycopy(elements,0,tab,0,elements.length);
+        tab[elements.length] = element;
+        elements = tab;
+    }
+    public void set(int index, int element) {
+        if(elements.length >= index+1){ elements[index] = element;}
+    }
+    public int get(int index) {
+        if(this.size < index+1) {return 0;}
+        return elements[index];
     }
-    public void set(int index, int element) {  }
-    public int get(int index) { return 0; }
 }
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