# Function to find the partition position
def partition(array, low, high):
 
  # Choose the rightmost element as pivot
  pivot = array[high]
 
  # Pointer for greater element
  i = low - 1
 
  # Traverse through all elements
  # compare each element with pivot
  for j in range(low, high):
    if array[j] <= pivot:
      # If element smaller than pivot is found
      # swap it with the greater element pointed by i
      i += 1
      # Swapping element at i with element at j
      array[i], array[j] = array[j], array[i]
 
  # Swap the pivot element with the greater element specified by i
  array[i + 1], array[high] = array[high], array[i + 1]
 
  # Return the position from where partition is done
  return i + 1
 
# Function to perform quicksort
def quick_sort(array, low, high):
  if low < high:
 
    # Find pivot element such that
    # element smaller than pivot are on the left
    # element greater than pivot are on the right
    pi = partition(array, low, high)
 
    # Recursive call on the left of pivot
    quick_sort(array, low, pi-1)
 
    # Recursive call on the right of pivot
    quick_sort(array, pi+1, high)
 

# Driver code
array = [3, 5, 4, 2, 1, 6] # 10, 7, 8, 9, 1, 5
quick_sort(array, 0, len(array)-1)
print(f'Sorted array: {array}')