Changing Name of file and adding doctests in file.

maths/binary_exponentiation_2.py → maths/binary_multiplication.py

@@ -12,6 +12,32 @@
 
 
 def b_expo(a: int, b: int) -> int:
+    """
+    Calculate the result of multiplying 'a' and 'b' using bitwise multiplication.
+
+    Parameters:
+    a (int): The first number.
+    b (int): The second number.
+
+    Returns:
+    int: The result of 'a' multiplied by 'b'.
+
+    Examples:
+    >>> b_expo(2, 3)
+    6
+    >>> b_expo(5, 0)
+    0
+    >>> b_expo(3, 4)
+    12
+    >>> b_expo(10, 5)
+    50
+    >>> b_expo(0, 5)
+    0
+    >>> b_expo(2, 1)
+    2
+    >>> b_expo(1, 10)
+    10
+    """
     res = 0
     while b > 0:
         if b & 1:
@@ -24,6 +50,31 @@ def b_expo(a: int, b: int) -> int:
 
 
 def b_expo_mod(a: int, b: int, c: int) -> int:
+    """
+    Calculate (a * b) % c using binary exponentiation and modular arithmetic.
+
+    Parameters:
+    a (int): The first number.
+    b (int): The second number.
+    c (int): The modulus.
+
+    Returns:
+    int: The result of (a * b) % c.
+
+    Examples:
+    >>> b_expo_mod(2, 3, 5)
+    1
+    >>> b_expo_mod(5, 0, 7)
+    0
+    >>> b_expo_mod(3, 4, 6)
+    0
+    >>> b_expo_mod(10, 5, 13)
+    11
+    >>> b_expo_mod(2, 1, 5)
+    2
+    >>> b_expo_mod(1, 10, 3)
+    1
+    """
     res = 0
     while b > 0:
         if b & 1:
@@ -35,6 +86,11 @@ def b_expo_mod(a: int, b: int, c: int) -> int:
     return res
 
 
+if __name__ == "__main__":
+    import doctest
+
+    doctest.testmod()
+
 """
 * Wondering how this method works !
 * It's pretty simple.