Added a code which converts an array to a Linked List!!

Author: sarveshh31

data_structures/linked_list/arr_to_ll.py

@@ -0,0 +1,55 @@
+class Node:
+    """A node in a singly linked list."""
+
+    def __init__(self, data: int = 0):
+        self.data = data  # The value of the node
+        self.next = None  # Pointer to the next node
+
+
+def array_to_linked_list(arr: list[int]) -> Node:
+    """
+    Convert an array into a linked list.
+
+    :param arr: List of integers to convert into a linked list.
+    :return: The head of the linked list.
+
+    >>> array_to_linked_list([1, 2, 3])
+    Node(data=1, next=Node(data=2, next=Node(data=3, next=None)))
+    >>> array_to_linked_list([])
+    >>> array_to_linked_list([4, 5, 6])
+    Node(data=4, next=Node(data=5, next=Node(data=6, next=None)))
+    """
+    if arr is None:  # Check for empty array
+        return None
+
+    # Create the head of the linked list
+    head = Node(arr[0])
+    n = head  # Pointer to the current node
+
+    # Loop through the array and construct the linked list
+    for data in arr[1:]:
+        n.next = Node(data)  # Create a new node and link it
+        n = n.next  # Move to the next node
+
+    return head  # Return the head of the linked list
+
+
+# Example usage
+if __name__ == "__main__":
+    # Input: a list of integers
+    input_array = list(map(int, input("Enter array elements separated by space: ").strip().split()))
+    linked_list_head = array_to_linked_list(input_array)
+
+
+    # Function to print the linked list for demonstration
+    def print_linked_list(head: Node):
+        """Print the linked list."""
+        n = head
+        while n is not None:
+            print(n.data, end=" -> ")
+            n = n.next
+        print("None")
+
+
+    # Print the resulting linked list
+    print_linked_list(linked_list_head)