✨ feat(eular_5.py)：添加计时装饰器和Python内置lcm解决方案

📝 docs(eular_5.py)：增加性能测试功能，比较两种实现方式的执行时间

solutions/0005.smallestMultiple/eular_5.py

@@ -5,6 +5,18 @@ What is the smallest positive number that is evenly divisible by all of the numb
 
 import math
 import random
+import time
+
+
+def timer(func):
+    def wrapper(*args, **kwargs):
+        start_time = time.time()
+        result = func(*args, **kwargs)
+        end_time = time.time()
+        print(f"{func.__name__} took {end_time - start_time:.6f} seconds")
+        return result
+
+    return wrapper
 
 
 def is_probable_prime(n: int, trials: int = 10) -> bool:
@@ -54,6 +66,7 @@ def primes_up_to(n: int) -> list[int]:
     return primes
 
 
+@timer
 def smallest_multiple(n: int) -> int:
     result = 1
     for p in primes_up_to(n):
@@ -63,5 +76,12 @@ def smallest_multiple(n: int) -> int:
     return result
 
 
+@timer
+def python_solution(n: int) -> int:
+    ls = list(range(1, n + 1))
+    return math.lcm(*ls)
+
+
 if __name__ == "__main__":
     print(smallest_multiple(20))
+    print(python_solution(20))