Implemented intersection_of_sorted

solution12.py

@@ -1,3 +1,14 @@
 def is_armstrong(n:int) -> bool:
-    pass
-
+    digits_str = str(n)
+    digits_len = len(digits_str)
+    total = 0
+    for digit in digits_str:
+        number = int(digit)
+        result = number ** digits_len
+        total = total + result
+    return total == n
+if __name__ == "__main__":
+    print(f"is_armstrong(153) = {is_armstrong(153)}")
+    print(f"is_armstrong(10) = {is_armstrong(10)}")
+    print(f"is_armstrong(9474) = {is_armstrong(9474)}")
+    print(f"is_armstrong(123) = {is_armstrong(123)}")

solution18.py

@@ -0,0 +1,2 @@
+def intersection_of_sorted(a: list, b: list) -> list:
+    pass