human
Dual pivot Quicksort | Python3 program to implement dual pivot QuickSort.
lp means left pivot and rp means right pivot.
p is the left pivot , and q is the right pivot ..
If elements are less than the left pivot.
If elements are greater than or equal to the right pivot.
Bring pivots to their appropriate positions ..
Returning the indices of the pivots.
Driver code"
How can the above be solved in Python?
 ... Write me a code to dual pivot Quicksort and the other steps required?
assistant
#Here is code to dual pivot Quicksort and the other steps required.
 def dualPivotQuickSort ( arr , low , high ) :
	if low < high :
		lp , rp = partition ( arr , low , high )
		dualPivotQuickSort ( arr , low , lp - 1 )
		dualPivotQuickSort ( arr , lp + 1 , rp - 1 )
		dualPivotQuickSort ( arr , rp + 1 , high )
def partition ( arr , low , high ) :
	if arr [ low ] > arr [ high ] :
		arr [ low ] , arr [ high ] = arr [ high ] , arr [ low ]
	j = k = low + 1
	g , p , q = high - 1 , arr [ low ] , arr [ high ]
	while k <= g :
		if arr [ k ] < p :
			arr [ k ] , arr [ j ] = arr [ j ] , arr [ k ]
			j += 1
		elif arr [ k ] >= q :
			while arr [ g ] > q and k < g :
				g -= 1
			arr [ k ] , arr [ g ] = arr [ g ] , arr [ k ]
			g -= 1
			if arr [ k ] < p :
				arr [ k ] , arr [ j ] = arr [ j ] , arr [ k ]
				j += 1
		k += 1
	j -= 1
	g += 1
	arr [ low ] , arr [ j ] = arr [ j ] , arr [ low ]
	arr [ high ] , arr [ g ] = arr [ g ] , arr [ high ]
	return j , g
arr = [ 24 , 8 , 42 , 75 , 29 , 77 , 38 , 57 ]
dualPivotQuickSort ( arr , 0 , 7 )
print ( ' Sorted ▁ array : ▁ ' , end = ' ' )
for i in arr :
	print ( i , end = ' ▁ ' )
print ( )