adding algo

Author: ivanpenaloza

src/my_project/interviews/top_150_questions_round_21/remove_duplicates.py

@@ -0,0 +1,17 @@
+from typing import List, Union, Collection, Mapping, Optional
+from abc import ABC, abstractmethod
+
+class Solution:
+    def removeDuplicates(self, nums: List[int]) -> int:
+
+        j = 0
+        len_nums = len(nums)
+
+        for i in range(len_nums - 1):
+            if nums[i] != nums[i+1]:
+                nums[j] = nums[i]
+                j += 1
+
+        nums[j] = nums[len_nums - 1]
+
+        return j + 1

tests/test_150_questions_round_21/test_remove_duplicates_round_21.py

@@ -0,0 +1,11 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_21\
+.remove_duplicates import Solution
+
+class RemoveDuplicatesTestCase(unittest.TestCase):
+
+    def test_remove_duplicates(self):
+        solution = Solution()
+        output = solution.removeDuplicates(nums=[1,1,2])
+        target = 2
+        self.assertEqual(output, target)