Added a code which converts an array to a linked list

Author: sarveshh31

data_structures/linked_list/arr_to_llist.py

@@ -0,0 +1,46 @@
+class Node:
+    """class to represent a node in a linked list."""
+    def __init__(self, data):
+        self.data = data  # store the value of the node
+        self.next = None  # pointer to the next node
+
+
+def array_to_linked_list(arr):
+    """Convert an array to a linked list and return the head of the linked list."""
+    if arr is None:  # checking if the input array is empty
+        return None  # if empty it will return nothing
+
+    head = Node(arr[0])  # create head node
+    n = head  # pointer to the head node
+
+    # loop through the array starting from the second element coz 1st element is head
+    for value in arr[1:]:
+        n.next = Node(value)  # creating a new node
+        n = n.next
+
+    return head
+
+
+def print_linked_list(head):
+    """printing the linked list."""
+    n = head
+    while n is not None:
+        print(n.data, end=" -> " if n.next else "")
+        n = n.next
+    print(" -> Null")  # for a new line at end which will also add -> null at end
+
+
+# main function to take user input
+def main():
+    user_input = input("Enter a list of integers separated by spaces: ")
+
+    arr = list(map(int, user_input.split()))  # convert input string to a list of integers
+
+    linked_list_head = array_to_linked_list(arr)
+
+    print("Linked List: ", end="")
+    print_linked_list(linked_list_head)
+
+
+if __name__ == "__main__":
+    main()