From ada31119f7dd439666580fe858eea1e3befad90a Mon Sep 17 00:00:00 2001
From: eediallo <elhhabdouldiallo@gmail.com>
Date: Thu, 12 Jun 2025 21:28:42 +0100
Subject: [PATCH] Implement linked list with push_head, pop_tail, and remove
 methods

---
 Sprint-2/implement_linked_list/linked_list.py | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/Sprint-2/implement_linked_list/linked_list.py b/Sprint-2/implement_linked_list/linked_list.py
index e69de29..46d0ac0 100644
--- a/Sprint-2/implement_linked_list/linked_list.py
+++ b/Sprint-2/implement_linked_list/linked_list.py
@@ -0,0 +1,45 @@
+class Node:
+    def __init__(self, value):
+        self.value = value
+        self.next = None
+        self.previous = None
+
+class LinkedList:
+    def __init__(self):
+        self.head = None
+        self.tail = None
+
+    def push_head(self, value):
+        node = Node(value)
+        node.next = self.head
+        if self.head:
+            self.head.previous = node
+        self.head = node
+        if self.tail is None:
+            self.tail = node
+        return node
+
+    def pop_tail(self):
+        if self.tail is None:
+            return None
+        node = self.tail
+        value = node.value
+        if node.previous:
+            self.tail = node.previous
+            self.tail.next = None
+        else:
+            self.head = None
+            self.tail = None
+        return value
+
+    def remove(self, node):
+        if node.previous:
+            node.previous.next = node.next
+        else:
+            self.head = node.next
+        if node.next:
+            node.next.previous = node.previous
+        else:
+            self.tail = node.previous
+        node.next = None
+        node.previous = None