diff --git a/eating_cookies/eating_cookies.py b/eating_cookies/eating_cookies.py
index aef505784..ed8b0e2bf 100644
--- a/eating_cookies/eating_cookies.py
+++ b/eating_cookies/eating_cookies.py
@@ -3,9 +3,15 @@
 Returns: an integer
 '''
 def eating_cookies(n):
-    # Your code here
 
-    pass
+    if n == 0 or n == 1:
+        return 1
+    if n == 2:
+        return 2
+    if n == 3:
+      return 4
+
+    return eating_cookies(n-1) + eating_cookies(n-2) + eating_cookies(n-3)
 
 if __name__ == "__main__":
     # Use the main function here to test out your implementation
diff --git a/moving_zeroes/moving_zeroes.py b/moving_zeroes/moving_zeroes.py
index 2976ae48f..a1f62cc8e 100644
--- a/moving_zeroes/moving_zeroes.py
+++ b/moving_zeroes/moving_zeroes.py
@@ -3,13 +3,15 @@
 Returns: a List of integers
 '''
 def moving_zeroes(arr):
-    # Your code here
-
-    pass
+    for num in arr:
+      if num == 0:
+        arr.remove(num)
+        arr.append(num)
+    return arr
 
 
 if __name__ == '__main__':
     # Use the main function here to test out your implementation
     arr = [0, 3, 1, 0, -2]
 
-    print(f"The resulting of moving_zeroes is: {moving_zeroes(arr)}")
\ No newline at end of file
+    print(f"The resulting of moving_zeroes is: {moving_zeroes(arr)}")
diff --git a/product_of_all_other_numbers/product_of_all_other_numbers.py b/product_of_all_other_numbers/product_of_all_other_numbers.py
index 7d976257a..e136d4f49 100644
--- a/product_of_all_other_numbers/product_of_all_other_numbers.py
+++ b/product_of_all_other_numbers/product_of_all_other_numbers.py
@@ -3,14 +3,30 @@
 Returns: a List of integers
 '''
 def product_of_all_other_numbers(arr):
-    # Your code here
+  product_array = []
+  index = 0
+
+  while index < len(arr):
+
+    product = 1
+
+    for num in range(0, len(arr)):
+      if index == num:
+        continue
+      else:
+        product *= arr[num]
+
+    product_array.append(product)
+    index += 1
+    
+  return product_array
+
 
-    pass
 
 
 if __name__ == '__main__':
-    # Use the main function to test your implementation
-    # arr = [1, 2, 3, 4, 5]
-    arr = [2, 6, 9, 8, 2, 2, 9, 10, 7, 4, 7, 1, 9, 5, 9, 1, 8, 1, 8, 6, 2, 6, 4, 8, 9, 5, 4, 9, 10, 3, 9, 1, 9, 2, 6, 8, 5, 5, 4, 7, 7, 5, 8, 1, 6, 5, 1, 7, 7, 8]
+  # Use the main function to test your implementation
+  arr = [1, 2, 3, 4, 5]
+  # arr = [2, 6, 9, 8, 2, 2, 9, 10, 7, 4, 7, 1, 9, 5, 9, 1, 8, 1, 8, 6, 2, 6, 4, 8, 9, 5, 4, 9, 10, 3, 9, 1, 9, 2, 6, 8, 5, 5, 4, 7, 7, 5, 8, 1, 6, 5, 1, 7, 7, 8]
 
-    print(f"Output of product_of_all_other_numbers: {product_of_all_other_numbers(arr)}")
+  print(f"Output of product_of_all_other_numbers: {product_of_all_other_numbers(arr)}")
diff --git a/single_number/single_number.py b/single_number/single_number.py
index be6fd6278..b2ab45a11 100644
--- a/single_number/single_number.py
+++ b/single_number/single_number.py
@@ -3,13 +3,21 @@
 Returns: an integer
 '''
 def single_number(arr):
-    # Your code here
+    my_set = set()
 
-    pass
+    for num in arr:
+      if num not in my_set:
+        my_set.add(num)
+      else:
+        my_set.remove(num)
+    
+    list_from_set = list(my_set)
+
+    return list_from_set[0]
 
 
 if __name__ == '__main__':
     # Use the main function to test your implementation
     arr = [1, 1, 4, 4, 5, 5, 3, 3, 9, 0, 0]
 
-    print(f"The odd-number-out is {single_number(arr)}")
\ No newline at end of file
+    print(f"The odd-number-out is {single_number(arr)}")
diff --git a/sliding_window_max/data/input.txt b/sliding_window_max/input.txt
similarity index 100%
rename from sliding_window_max/data/input.txt
rename to sliding_window_max/input.txt
diff --git a/sliding_window_max/data/output.txt b/sliding_window_max/output.txt
similarity index 100%
rename from sliding_window_max/data/output.txt
rename to sliding_window_max/output.txt
diff --git a/sliding_window_max/sliding_window_max.py b/sliding_window_max/sliding_window_max.py
index 518ed36a2..af9190d7b 100644
--- a/sliding_window_max/sliding_window_max.py
+++ b/sliding_window_max/sliding_window_max.py
@@ -2,10 +2,25 @@
 Input: a List of integers as well as an integer `k` representing the size of the sliding window
 Returns: a List of integers
 '''
-def sliding_window_max(nums, k):
-    # Your code here
 
-    pass
+import collections
+import itertools
+
+def sliding_window_max(nums, size):
+    arr = []
+    
+    nums = iter(nums)
+    window = collections.deque(
+        itertools.islice(nums, size-1),
+        maxlen=size
+    )
+    for item in nums:
+        window.append(item)
+        numbers = tuple(window)
+        max_num = max(numbers)
+        arr.append(max_num)
+    
+    return arr
 
 
 if __name__ == '__main__':
diff --git a/sliding_window_max/test_sliding_window_max_large_input.py b/sliding_window_max/test_sliding_window_max_large_input.py
index 840de6327..34b0e3ac2 100644
--- a/sliding_window_max/test_sliding_window_max_large_input.py
+++ b/sliding_window_max/test_sliding_window_max_large_input.py
@@ -7,13 +7,13 @@ def test_sliding_window_max_large_input(self):
         arr = []
         k = 1000
 
-        with open("data/input.txt") as file:
+        with open("input.txt") as file:
             for line in file:
                 arr.append(int(line.strip()))
 
         expected = []
 
-        with open("data/output.txt") as file:
+        with open("output.txt") as file:
             for line in file:
                 expected.append(int(line.strip()))