Solving new problem from Microsoft

Microsoft_Problems/Microsoft_Problem_06.py

@@ -0,0 +1,20 @@
+"""
+This problem was asked by Microsoft.
+
+A number is considered perfect if its digits sum up to exactly 10.
+
+Given a positive integer n, return the n-th perfect number.
+
+For example, given 1, you should return 19. Given 2, you should return 28.
+"""
+
+
+def get_perfect_number(n):
+    if n <= 0:
+        return
+    return n * 10 + 10 - n
+
+
+assert get_perfect_number(1) == 19
+assert get_perfect_number(2) == 28
+assert get_perfect_number(3) == 37