ajout crypto

2025-03-31 10:06:09 +02:00
parent 731020a934
commit bff1a74ae7
680 changed files with 14849 additions and 0 deletions
--- a/DEV3.2/ancien_controle/SimpleDeque.java
+++ b/DEV3.2/ancien_controle/SimpleDeque.java
@@ -0,0 +1,105 @@
+public class SimpleDeque<T> implements MinimalDeque<T> {
+    private static class Node<T> {
+        T value;
+        Node<T> next;
+        Node<T> prev;
+
+        Node(T value) {
+            this.value = value;
+        }
+    }
+
+    private Node<T> head;
+    private Node<T> tail;
+    private int size;
+
+    public SimpleDeque() {
+        head = null;
+        tail = null;
+        size = 0;
+    }
+
+    @Override
+    public void addFirst(T element) {
+        Node<T> newNode = new Node<>(element);
+        if (isEmpty()) {
+            head = tail = newNode;
+        } else {
+            newNode.next = head;
+            head.prev = newNode;
+            head = newNode;
+        }
+        size++;
+    }
+
+    @Override
+    public void addLast(T element) {
+        Node<T> newNode = new Node<>(element);
+        if (isEmpty()) {
+            head = tail = newNode;
+        } else {
+            newNode.prev = tail;
+            tail.next = newNode;
+            tail = newNode;
+        }
+        size++;
+    }
+
+    @Override
+    public T removeFirst() {
+        if (isEmpty()) {
+            throw new IllegalStateException("Deque is empty");
+        }
+        T value = head.value;
+        head = head.next;
+        if (head != null) {
+            head.prev = null;
+        } else {
+            tail = null;
+        }
+        size--;
+        return value;
+    }
+
+    @Override
+    public T removeLast() {
+        if (isEmpty()) {
+            throw new IllegalStateException("Deque is empty");
+        }
+        T value = tail.value;
+        tail = tail.prev;
+        if (tail != null) {
+            tail.next = null;
+        } else {
+            head = null;
+        }
+        size--;
+        return value;
+    }
+
+    @Override
+    public T peekFirst() {
+        if (isEmpty()) {
+            return null;
+        }
+        return head.value;
+    }
+
+    @Override
+    public T peekLast() {
+        if (isEmpty()) {
+            return null;
+        }
+        return tail.value;
+    }
+
+    @Override
+    public boolean isEmpty() {
+        return size == 0;
+    }
+
+    @Override
+    public int size() {
+        return size;
+    }
+}