diff --git a/sort.py b/sort.py
new file mode 100644
index 0000000..16623a2
--- /dev/null
+++ b/sort.py
@@ -0,0 +1,16 @@
+arr = [40, 4, 20, 10, 30, 6, 10]
+
+# insertion sort:
+for i in range(1, len(arr)):
+    a_i = arr[i]
+    j = i - 1
+    while j >= 0:
+        print("comparing {} and {}".format(arr[j], a_i]))
+        if arr[j] > a_i:
+            arr[j + 1] = arr[j]
+        else:
+            break
+        j -= 1
+    arr[j + 1] = a_i
+
+print(arr)