Fixed issue

tasks/python/medium/bubble_sort.py

@@ -1,5 +1,15 @@
 def bubble_sort(arr):
-    # TODO: Implement the bubble sort algorithm
+    arr_length = len(arr)
+    for position in arr:
+        index = 0
+        while index < arr_length-1:
+            if arr[index] < arr[index+1]:
+                arr.insert(index,arr[index])
+            if arr[index] > arr[index+1]:
+                arr.insert(index+2,arr[index])
+            arr.pop(index)
+            index += 1 
+    return arr
 
 #! Test cases (Don't edit):
 arr = [64, 25, 12, 22, 11]