From c853e30d3d0ff091cdd785ca5e3a527d0c6a666d Mon Sep 17 00:00:00 2001
From: ShreyasKudahalli <shreyaskudahalli1857@gmail.com>
Date: Sun, 7 Dec 2025 23:22:11 +0530
Subject: [PATCH 1/3] Add automorphic number check algorithm

---
 maths/automorphic_number.py | 24 ++++++++++++++++++++++++
 1 file changed, 24 insertions(+)
 create mode 100644 maths/automorphic_number.py

diff --git a/maths/automorphic_number.py b/maths/automorphic_number.py
new file mode 100644
index 000000000000..9265c7f09868
--- /dev/null
+++ b/maths/automorphic_number.py
@@ -0,0 +1,24 @@
+def is_automorphic(n: int) -> bool:
+    """
+    Check if a number is an Automorphic Number.
+    A number is automorphic if its square ends with the number itself.
+
+    Examples:
+    >>> is_automorphic(5)
+    True
+    >>> is_automorphic(6)
+    True
+    >>> is_automorphic(76)
+    True
+    >>> is_automorphic(7)
+    False
+
+    Time Complexity: O(d) where d is number of digits
+    """
+    square = n * n
+    return str(square).endswith(str(n))
+
+
+if __name__ == "__main__":
+    import doctest
+    doctest.testmod()

From 3645e14ed25fa512e6a637f79d1bfa75402d92f0 Mon Sep 17 00:00:00 2001
From: ShreyasKudahalli <shreyaskudahalli1857@gmail.com>
Date: Sun, 7 Dec 2025 23:25:42 +0530
Subject: [PATCH 2/3] Add automorphic number check algorithm

---
 maths/automorphic_number.py | 17 ++++++++++++++++-
 1 file changed, 16 insertions(+), 1 deletion(-)

diff --git a/maths/automorphic_number.py b/maths/automorphic_number.py
index 9265c7f09868..262c77205e58 100644
--- a/maths/automorphic_number.py
+++ b/maths/automorphic_number.py
@@ -1,8 +1,15 @@
 def is_automorphic(n: int) -> bool:
     """
     Check if a number is an Automorphic Number.
+
     A number is automorphic if its square ends with the number itself.
 
+    Args:
+        n: A non-negative integer.
+
+    Returns:
+        True if n is automorphic, False otherwise.
+
     Examples:
     >>> is_automorphic(5)
     True
@@ -12,9 +19,17 @@ def is_automorphic(n: int) -> bool:
     True
     >>> is_automorphic(7)
     False
+    >>> is_automorphic(-5)
+    Traceback (most recent call last):
+        ...
+    ValueError: n must be a non-negative integer
 
-    Time Complexity: O(d) where d is number of digits
+    Time Complexity:
+        O(d) where d is the number of digits of n.
     """
+    if n < 0:
+        raise ValueError("n must be a non-negative integer")
+
     square = n * n
     return str(square).endswith(str(n))
 

From 9c45d8d497f073755e10b636e31be81d51e7323e Mon Sep 17 00:00:00 2001
From: "pre-commit-ci[bot]"
 <66853113+pre-commit-ci[bot]@users.noreply.github.com>
Date: Sun, 7 Dec 2025 17:57:22 +0000
Subject: [PATCH 3/3] [pre-commit.ci] auto fixes from pre-commit.com hooks

for more information, see https://pre-commit.ci
---
 maths/automorphic_number.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/maths/automorphic_number.py b/maths/automorphic_number.py
index 262c77205e58..96f7019f9e93 100644
--- a/maths/automorphic_number.py
+++ b/maths/automorphic_number.py
@@ -36,4 +36,5 @@ def is_automorphic(n: int) -> bool:
 
 if __name__ == "__main__":
     import doctest
+
     doctest.testmod()