def bubble(a):
 count = 0
 for i in range((len(a) - 1)):
  for j in range(((len(a) - i) - 1)):
   if (a[(j + 1)] < a[j]):
    (a[j], a[(j + 1)]) = (a[(j + 1)], a[j])
    count += 1
 return count

def bubble ( a ) : count = 0 for i in range ( ( len ( a ) - 1 ) ) : for j in range ( ( ( len ( a ) - i ) - 1 ) ) : if ( a [ ( j + 1 ) ] < a [ j ] ) : ( a [ j ] , a [ ( j + 1 ) ] ) = ( a [ ( j + 1 ) ] , a [ j ] ) count += 1 return count
bubble sort: compare adjacent elements of the list left-to-right .