Python Program for Bubble Sort

In this article, we will learn about the implementation of bubble sort sorting technique.

The figure shown below illustrates the working of this algorithm −

Approach

• Starting with the first element(index = 0), compare the current element with the next element of the array.

• If the current element is greater than the next element of the array, swap them.

• If the current element is less than the next element, move to the next element.

Repeat Step 1.

Now let’s see the implementation below −

Example

def bubbleSort(ar):
   n = len(arr)
   # Traverse through all array elements
   for i in range(n):
   # Last i elements are already in correct position
   for j in range(0, n-i-1):
      # Swap if the element found is greater than the next element
      if ar[j] > ar[j+1] :
         ar[j], ar[j+1] = ar[j+1], ar[j]
# Driver code to test above
ar = ['t','u','t','o','r','i','a','l']
bubbleSort(ar)
print ("Sorted array is:")
for i in range(len(ar)):
   print (ar[i])

Output

Sorted array is:
a
i
o
r
t
t
u
l

Conclusion

In this article, we learnt about the approach to do Bubble sort in Python 3.x. Or earlier

Pavitra

Updated on: 25-Sep-2019

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