Merge pull request #1152 from ivan1016017/january14

adding climbing stairs algo

Author: ivanpenaloza

src/my_project/interviews/top_150_questions_round_12/climbing_stairs.py

@@ -0,0 +1,12 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def climbStairs(self, n: int) -> int:
+
+        a, b = 1, 1
+
+        for i in range(n):
+            a, b = b, a + b
+
+        return a 

tests/test_150_questions_round_12/test_climbing_stairs_round_12.py

@@ -0,0 +1,13 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_12\
+.climbing_stairs import Solution
+
+class ClimbingStairsTestCase(unittest.TestCase):
+
+    def test_climbing_stairs(self):
+        solution = Solution()
+        output = solution.climbStairs(n=3)
+        target = 3
+        self.assertEqual(output, target)
+
+