diff --git a/src/my_project/interviews/interview_amazon/round_1/algo_3.py b/src/my_project/interviews/interview_amazon/round_1/algo_3.py
index e69de29b..746f256d 100644
--- a/src/my_project/interviews/interview_amazon/round_1/algo_3.py
+++ b/src/my_project/interviews/interview_amazon/round_1/algo_3.py
@@ -0,0 +1,17 @@
+from typing import List
+
+class Solution:
+
+    def algo_1(self, nums: List[int]):
+
+        
+        nums = [n for n in nums if n % 7 == 0]
+        
+
+        return len(nums), nums
+    
+
+
+solution = Solution()
+
+print(solution.algo_1(nums=[1,2,7,14,34,35]))
\ No newline at end of file
diff --git a/src/my_project/interviews/interview_amazon/round_1/algo_4.py b/src/my_project/interviews/interview_amazon/round_1/algo_4.py
new file mode 100644
index 00000000..680515bf
--- /dev/null
+++ b/src/my_project/interviews/interview_amazon/round_1/algo_4.py
@@ -0,0 +1,28 @@
+from typing import List
+
+class Solution:
+
+    def algo_1(self, input_file):
+
+        
+        with open(input_file, 'r') as infile, \
+             open('odd_numbers.txt', 'w') as odd_nums, \
+             open('even_numbers.txt', 'w') as even_nums:
+
+            for line in infile:
+                if not line:
+                    continue
+                try:
+                    num = int(line)
+                    if num % 2 == 0:
+                        even_nums.write(f'{num}\n')
+                    else:
+                        odd_nums.write(f'{num}\n')
+                except ValueError:
+                    continue
+    
+
+
+solution = Solution()
+
+solution.algo_1(input_file='numbers.txt')
\ No newline at end of file
diff --git a/src/my_project/interviews/interview_amazon/round_1/even_numbers.txt b/src/my_project/interviews/interview_amazon/round_1/even_numbers.txt
new file mode 100644
index 00000000..e5b350fa
--- /dev/null
+++ b/src/my_project/interviews/interview_amazon/round_1/even_numbers.txt
@@ -0,0 +1,3 @@
+4
+8
+10
diff --git a/src/my_project/interviews/interview_amazon/round_1/numbers.txt b/src/my_project/interviews/interview_amazon/round_1/numbers.txt
new file mode 100644
index 00000000..e38a5bb5
--- /dev/null
+++ b/src/my_project/interviews/interview_amazon/round_1/numbers.txt
@@ -0,0 +1,6 @@
+1
+3
+4
+8
+10
+7
\ No newline at end of file
diff --git a/src/my_project/interviews/interview_amazon/round_1/odd_numbers.txt b/src/my_project/interviews/interview_amazon/round_1/odd_numbers.txt
new file mode 100644
index 00000000..47ae665d
--- /dev/null
+++ b/src/my_project/interviews/interview_amazon/round_1/odd_numbers.txt
@@ -0,0 +1,3 @@
+1
+3
+7
diff --git a/src/my_project/interviews/top_150_questions_round_17/remove_duplicates.py b/src/my_project/interviews/top_150_questions_round_17/remove_duplicates.py
new file mode 100644
index 00000000..c9563896
--- /dev/null
+++ b/src/my_project/interviews/top_150_questions_round_17/remove_duplicates.py
@@ -0,0 +1,18 @@
+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
\ No newline at end of file
diff --git a/tests/test_150_questions_round_17/test_remove_duplicates_round_17.py b/tests/test_150_questions_round_17/test_remove_duplicates_round_17.py
new file mode 100644
index 00000000..51fd9004
--- /dev/null
+++ b/tests/test_150_questions_round_17/test_remove_duplicates_round_17.py
@@ -0,0 +1,11 @@
+import unittest
+from src.my_project.interviews.top_150_questions_round_17\
+.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)
\ No newline at end of file