Bubble Sort in Python

# Regular bubble sort implementation
def bubbleSort(arr):
   size = len(arr)
   for i in range(size - 1):
       for j in range(size - i - 1):
           if arr[j] > arr[j + 1]:
               swap(arr, j, j + 1)

# A faster version of bubble sort!
def bubbleSortFaster(arr):
   size = len(arr)
   for i in range(size - 1):
       swapped = False
       for j in range(size - i - 1):
           if  arr[j] > arr[j + 1]:
               swap(arr,  j, j + 1)
               swapped = True
       
       if not swapped:
           break

# Helper function to swap elements in place
def swap(arr, a, b):
   tmp = arr[a]
   arr[a] = arr[b]
   arr[b] = tmp

# ----------
# Demo Code
# ----------
array = [2,5,3,7,9,4,6]
print(bubbleSort(array.copy()))
print(bubbleSortFaster(array.copy()))