From 790a354c098ea21cefd7819037a91473d7173968 Mon Sep 17 00:00:00 2001
From: shellhub <shellhub.me@gmail.com>
Date: Tue, 3 Nov 2020 17:39:50 +0800
Subject: [PATCH 1/6] add addition add subtract add count_digits

---
 maths/addition.py     | 16 ++++++++++++++++
 maths/count_digits.py | 27 +++++++++++++++++++++++++++
 maths/subtract.py     | 16 ++++++++++++++++
 3 files changed, 59 insertions(+)
 create mode 100644 maths/addition.py
 create mode 100644 maths/count_digits.py
 create mode 100644 maths/subtract.py

diff --git a/maths/addition.py b/maths/addition.py
new file mode 100644
index 0000000..2841758
--- /dev/null
+++ b/maths/addition.py
@@ -0,0 +1,16 @@
+def add(first_number, second_number):
+    """
+    >>> add(1, 2)
+    3
+    >>> add(1.1, 2.2)
+    3.3
+    >>> add(-1.1, 1.1)
+    0.0
+    """
+    return first_number + second_number
+
+
+if __name__ == "if __name__ == ''":
+    from doctest import testmod
+
+    testmod()
diff --git a/maths/count_digits.py b/maths/count_digits.py
new file mode 100644
index 0000000..d4ce2e3
--- /dev/null
+++ b/maths/count_digits.py
@@ -0,0 +1,27 @@
+def count_digits(number: int) -> int:
+    """
+    >>> count_digits(-123)
+    3
+    >>> count_digits(-1)
+    1
+    >>> count_digits(0)
+    1
+    >>> count_digits(123)
+    3
+    >>> count_digits(123456)
+    6
+    """
+    number = abs(number)
+    count = 0
+    while True:
+        number = number // 10
+        count = count + 1
+        if number == 0:
+            break
+    return count
+
+
+if __name__ == "__main__":
+    from doctest import testmod
+
+    testmod()
diff --git a/maths/subtract.py b/maths/subtract.py
new file mode 100644
index 0000000..1aafd5b
--- /dev/null
+++ b/maths/subtract.py
@@ -0,0 +1,16 @@
+def subtract(first_number, second_number):
+    """
+    >>> subtract(1.1, 1.1)
+    0.0
+    >>> subtract(10, 5)
+    5
+    >>> subtract(3.14159, 3)
+    0.14158999999999988
+    """
+    return first_number - second_number
+
+
+if __name__ == "__main__":
+    from doctest import testmod
+
+    testmod()

From ee9ce1964b76120ccd5fb7280247e3c48bd69a72 Mon Sep 17 00:00:00 2001
From: shellhub <shellhub.me@gmail.com>
Date: Tue, 3 Nov 2020 17:46:19 +0800
Subject: [PATCH 2/6] count digits recursion

---
 maths/count_digits_recursion.py | 21 +++++++++++++++++++++
 1 file changed, 21 insertions(+)
 create mode 100644 maths/count_digits_recursion.py

diff --git a/maths/count_digits_recursion.py b/maths/count_digits_recursion.py
new file mode 100644
index 0000000..d23bd49
--- /dev/null
+++ b/maths/count_digits_recursion.py
@@ -0,0 +1,21 @@
+def count_digits_recursion(number: int) -> int:
+    """
+    >>> count_digits_recursion(-123)
+    3
+    >>> count_digits_recursion(-1)
+    1
+    >>> count_digits_recursion(0)
+    1
+    >>> count_digits_recursion(123)
+    3
+    >>> count_digits_recursion(123456)
+    6
+    """
+    number = abs(number)
+    return 1 if number < 10 else 1 + count_digits_recursion(number // 10)
+
+
+if __name__ == "__main__":
+    from doctest import testmod
+
+    testmod()

From 4333a59216ae3b1d3ddb5a2ba740136b7970f119 Mon Sep 17 00:00:00 2001
From: shellhub <shellhub.me@gmail.com>
Date: Tue, 3 Nov 2020 17:52:31 +0800
Subject: [PATCH 3/6] cube number

---
 maths/cube_number.py | 25 +++++++++++++++++++++++++
 1 file changed, 25 insertions(+)
 create mode 100644 maths/cube_number.py

diff --git a/maths/cube_number.py b/maths/cube_number.py
new file mode 100644
index 0000000..ca57e56
--- /dev/null
+++ b/maths/cube_number.py
@@ -0,0 +1,25 @@
+"""
+https://en.wikipedia.org/wiki/Cube_(algebra)
+"""
+
+
+def is_cube_number(number: int) -> bool:
+    """
+    >>> all(is_cube_number(num) for num in [-8, -1, 0, 1, 8, 27, 64, 8000, 216_000])
+    True
+    >>> is_cube_number(4)
+    False
+    >>> is_cube_number(11)
+    False
+    """
+    number = abs(number)
+    for i in range(0, number + 1):
+        if i ** 3 == number:
+            return True
+    return False
+
+
+if __name__ == '__main__':
+    from doctest import testmod
+
+    testmod()

From 1637656a072550baf6e01b617b372ac37ad953df Mon Sep 17 00:00:00 2001
From: shellhub <shellhub.me@gmail.com>
Date: Wed, 4 Nov 2020 08:31:05 +0800
Subject: [PATCH 4/6] add factorial add factorial_recursion

---
 maths/factorial.py           | 28 ++++++++++++++++++++++++++++
 maths/factorial_recursion.py | 28 ++++++++++++++++++++++++++++
 2 files changed, 56 insertions(+)
 create mode 100644 maths/factorial.py
 create mode 100644 maths/factorial_recursion.py

diff --git a/maths/factorial.py b/maths/factorial.py
new file mode 100644
index 0000000..ef1697b
--- /dev/null
+++ b/maths/factorial.py
@@ -0,0 +1,28 @@
+def factorial(number: int) -> int:
+    """
+    >>> factorial(5)
+    120
+    >>> factorial(0)
+    1
+    >>> import random
+    >>> import math
+    >>> numbers = list(range(0, 50))
+    >>> for num in numbers:
+    ...     assert factorial(num) == math.factorial_recursion(num)
+    >>> factorial(-1)
+    Traceback (most recent call last):
+    ...
+    ValueError: factorial() not defined for negative values
+    """
+    if number < 0:
+        raise ValueError("factorial() not defined for negative values")
+    fact = 1
+    for i in range(1, number + 1):
+        fact *= i
+    return fact
+
+
+if __name__ == '__main__':
+    from doctest import testmod
+
+    testmod()
diff --git a/maths/factorial_recursion.py b/maths/factorial_recursion.py
new file mode 100644
index 0000000..ea731f4
--- /dev/null
+++ b/maths/factorial_recursion.py
@@ -0,0 +1,28 @@
+def factorial_recursion(number: int) -> int:
+    """
+    >>> factorial_recursion(5)
+    120
+    >>> factorial_recursion(0)
+    1
+    >>> import random
+    >>> import math
+    >>> numbers = list(range(0, 50))
+    >>> for num in numbers:
+    ...     assert factorial_recursion(num) == math.factorial(num)
+    >>> factorial_recursion(-1)
+    Traceback (most recent call last):
+    ...
+    ValueError: factorial() not defined for negative values
+    """
+    if number < 0:
+        raise ValueError("factorial() not defined for negative values")
+    return (
+        1 if number == 0 or number == 1
+        else number * factorial_recursion(number - 1)
+    )
+
+
+if __name__ == '__main__':
+    from doctest import testmod
+
+    testmod()

From c28f9023c94e3f7fc06911d5238503810340feac Mon Sep 17 00:00:00 2001
From: github-actions <${GITHUB_ACTOR}@users.noreply.github.com>
Date: Wed, 4 Nov 2020 00:35:52 +0000
Subject: [PATCH 5/6] Formatted with psf/black

---
 maths/cube_number.py         | 2 +-
 maths/factorial.py           | 2 +-
 maths/factorial_recursion.py | 7 ++-----
 3 files changed, 4 insertions(+), 7 deletions(-)

diff --git a/maths/cube_number.py b/maths/cube_number.py
index ca57e56..b15dc12 100644
--- a/maths/cube_number.py
+++ b/maths/cube_number.py
@@ -19,7 +19,7 @@ def is_cube_number(number: int) -> bool:
     return False
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     from doctest import testmod
 
     testmod()
diff --git a/maths/factorial.py b/maths/factorial.py
index ef1697b..32d1fad 100644
--- a/maths/factorial.py
+++ b/maths/factorial.py
@@ -22,7 +22,7 @@ def factorial(number: int) -> int:
     return fact
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     from doctest import testmod
 
     testmod()
diff --git a/maths/factorial_recursion.py b/maths/factorial_recursion.py
index ea731f4..195b7ab 100644
--- a/maths/factorial_recursion.py
+++ b/maths/factorial_recursion.py
@@ -16,13 +16,10 @@ def factorial_recursion(number: int) -> int:
     """
     if number < 0:
         raise ValueError("factorial() not defined for negative values")
-    return (
-        1 if number == 0 or number == 1
-        else number * factorial_recursion(number - 1)
-    )
+    return 1 if number == 0 or number == 1 else number * factorial_recursion(number - 1)
 
 
-if __name__ == '__main__':
+if __name__ == "__main__":
     from doctest import testmod
 
     testmod()

From 46ac441a8cce437e1ae2b2de1f1178064cd21036 Mon Sep 17 00:00:00 2001
From: shellhub <shellhub.me@gmail.com>
Date: Wed, 4 Nov 2020 08:40:06 +0800
Subject: [PATCH 6/6] fixed build

---
 maths/addition.py  | 2 +-
 maths/factorial.py | 2 +-
 2 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/maths/addition.py b/maths/addition.py
index 2841758..d9b4231 100644
--- a/maths/addition.py
+++ b/maths/addition.py
@@ -3,7 +3,7 @@ def add(first_number, second_number):
     >>> add(1, 2)
     3
     >>> add(1.1, 2.2)
-    3.3
+    3.3000000000000003
     >>> add(-1.1, 1.1)
     0.0
     """
diff --git a/maths/factorial.py b/maths/factorial.py
index 32d1fad..af8b17e 100644
--- a/maths/factorial.py
+++ b/maths/factorial.py
@@ -8,7 +8,7 @@ def factorial(number: int) -> int:
     >>> import math
     >>> numbers = list(range(0, 50))
     >>> for num in numbers:
-    ...     assert factorial(num) == math.factorial_recursion(num)
+    ...     assert factorial(num) == math.factorial(num)
     >>> factorial(-1)
     Traceback (most recent call last):
     ...