diff --git a/solutions/jcalvarezj/__init__.py b/solutions/jcalvarezj/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/solutions/jcalvarezj/solution.py b/solutions/jcalvarezj/solution.py
new file mode 100644
index 0000000..7ee1744
--- /dev/null
+++ b/solutions/jcalvarezj/solution.py
@@ -0,0 +1,25 @@
+"""
+This module includes my solution to the challenge
+"""
+from typing import List
+
+
+class Solution:
+    """
+    This class represents a solution object that provides methods used to
+    compute a result
+    """
+    def duplicate_zeros(self, arr: List[int]):
+        """
+        This method duplicates the zeros inside the input array, while
+        respecting its original size
+        """
+        initial_size = len(arr)
+        arr_enum = enumerate(arr.copy())
+        acumulate = 0
+        for i, num in arr_enum:
+            if num == 0:
+                arr.insert(i + acumulate + 1, 0)
+                acumulate += 1
+        for i in range(len(arr) - initial_size):
+            arr.pop()