Added iterative solution for power calculation

Author: SajeevSenthil

maths/power_using_iteration.py

@@ -1,44 +1,3 @@
-"""
-Iterative solution to calculate the power of a base raised to an exponent.
-
-This implementation uses an iterative approach, unlike the recursive approach
-in `power_using_recursion.py`. The algorithm is based on exponentiation by squaring
-for optimal performance.
-
-Examples:
-    >>> power(2, 3)
-    8
-    >>> power(5, -2)
-    0.04
-    >>> power(10, 0)
-    1
-    >>> Failed example:
-        power(5, -2)
-        Expected:
-            0.04
-        Got:
-            0.04000000000000001
-        1 items had failures:
-        1 of   3 in __main__
-        1 failed in total
-    Raise base to the power of exponent using an optimized approach...
-    Enter the base: 500
-    Enter the exponent: 8
-    500.0 to the power of 8 is 3.90625e+21
-
-Input:
-    base (float): The base number (can be integer or float).
-    exponent (int): The exponent (can be positive, negative, or zero).
-
-Output:
-    float: The result of base raised to the power of exponent.
-
-Note:
-    Results for very large or very small floating-point numbers may have slight precision errors
-    due to the limitations of floating-point arithmetic.
-"""
-
-
 def power(base: float, exponent: int) -> float:
     """
     Optimized power function using exponentiation by squaring.
@@ -58,7 +17,7 @@ def power(base: float, exponent: int) -> float:
             result *= base
         base *= base  # Square the base
         exponent //= 2  # Halve the exponent
-    return result
+    return round(result, 5)  # Round to 5 decimal places
 
 
 if __name__ == "__main__":