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How to Sort Using Quick Sort in Python?

Here is how to sort using Quick Sort in Python.
Run this code here: https://repl.it/@VinitKhandelwal/quick-sort
def quickSort(list1, left, right):
length = len(list1)
if left < right:
pivot = right
partitionIndex = partition(list1, pivot, left, right)

quickSort(list1, left, partitionIndex - 1)
quickSort(list1, partitionIndex + 1, right)
return list1

def partition(list1, pivot, left, right):
pivotValue = list1[pivot]
partitionIndex = left

for i in range(left, right):
if list1[i] < pivotValue:
swap(list1, i, partitionIndex)
partitionIndex += 1
swap(list1, right, partitionIndex)
return partitionIndex

def swap(list1, firstIndex, secondIndex):
temp = list1[firstIndex]
list1[firstIndex] = list1[secondIndex]
list1[secondIndex] = temp

numbers = [99, 44, 6, 2, 1, 5, 63, 87, 283, 4, 0]
print(quickSort(numbers, 0, len(numbers)-1))

OUTPUT

[0, 1, 2, 4, 5, 6, 44, 63, 87, 99, 283]

BIG O

O(n log n)

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