Added documentation and driver code

Python/sort/Bubble_Sort.py

@@ -1,15 +1,28 @@
-#Adaptive Bubble Sort (Loop runs only till the array is unsorted)
+'''
+bubble_sort() function uses an iterative approach sort the array in increasing
+order passed as an argument. It compares adjacent elements and swappes them if
+there is any larger element before the smaller element. After the first pass,
+the most heaviest element shifts to the last position.
+The flag is used to check if any swapping is performed or not. If no swapping is
+done, the loop breaks as the array is already sorted.
+Time Complexity: O(n^2)
+Space Complexity: O(1)
+Return Type: No return type as lists are mutable
+'''
+def bubble_sort(Array):
+    for i in range (len(Array)-1):
+        flag = True
+        for j in range (len(Array)-1):
+            if (Array[j] > Array[j+1]):
+                flag = False
+                Array[j], Array[j+1] = Array[j+1], Array[j]
+        if flag:
+            break
 
-print("Enter the elements of the list to be sorted: ")
-Array = [int(x) for x in input().split(" ")]          # Space seperated input
-for i in range (len(Array)-1):
-    flag = True # Flag for checking if the array is sorted or not
-    for j in range (len(Array)-1):
-        if (Array[j] > Array[j+1]):         #Checking if current element greater than the next element
-            flag = False #The array is still unsorted
-            Array[j], Array[j+1] = Array[j+1], Array[j]         #Swapping the elements
-    if flag: #Checking if the array is already sorted
-        break
-print("List after sorting: ")#Printing out the sorted list
-for i in Array:
-    print(i,end=" ")
+if __name__=="__main__": 
+    print("Enter the elements of the list to be sorted: ")
+    Array = [int(x) for x in input().split(" ")]
+    bubble_sort(Array)
+    print("List after sorting: ")
+    for i in Array:
+        print(i,end=" ")