Deleted duplicate file

maths/gamma_recursive.py

@@ -1,83 +0,0 @@
-"""
-Gamma function is a very useful tool in physics.
-It helps calculating complex integral in a convenient way.
-for more info: https://en.wikipedia.org/wiki/Gamma_function
-"""
-
-# Importing packages
-from math import pi, sqrt
-from re import match
-from typing import Union
-
-
-def gamma(num: Union[int, float]) -> Union[int, float]:
-    """
-    Calculates the value of Gamma function of num
-    where num is either an integer (1,2,3..) or a half-integer (0.5,1.5,2.5...).
-    Implemented using recursion
-    Examples:
-    >>> Gamma of: 0.5
-    √π
-    >>> Gamma of: 2
-    1
-    >>> Gamma of: 3.5
-    1.875√π
-    """
-    if num == 1:
-        return 1
-    elif num == 0.5:
-        return sqrt(pi)
-    elif num > 1:
-        return (num - 1) * gamma(num - 1)
-    # Error
-    return -2
-
-
-def test_gamma() -> None:
-    """
-    >>> test_gamma()
-    """
-    assert sqrt(pi) == gamma(0.5)
-    assert 1 == gamma(1)
-    assert 1 == gamma(2)
-
-
-if __name__ == "__main__":
-    # Initialize boolean
-    number = True
-    # Get input from user
-    input_ = input("Gamma of: ")
-    # Ensure valid input
-    try:
-        # Ensure input matches half-integer (float) pattern
-        if match(r"^[0-9]*\.5$", input_):
-            # Convert string to float
-            num = float(input_)
-        # Ensure input matches an integer pattern
-        elif match(r"^[1-9][0-9]*$", input_):
-            # Convert string to int
-            num = int(input_)
-        # Input is not a valid number
-        else:
-            # raise an error
-            raise ValueError
-    # Ensure print an error message
-    except ValueError:
-        print("Error: Input must be an integer or an half-integer!")
-        number = False
-    finally:
-        # Ensure input is a valid number
-        if number:
-            print(f"\u0393({num}) = ", end="")
-            # Ensure input is an integer
-            if isinstance(gamma(num), int):
-                # Print result
-                print(gamma(num))
-            # Otherwise print results with √π (gamma of 0.5 is √π)
-            # Therefore all results will be a number times √π
-            else:
-                results = f"{gamma(num) / sqrt(pi):.4f}"
-                results = results.rstrip("0").rstrip(".")
-                if results == "1":
-                    results = ""
-                print(results + "\u221A\u03c0")