human
Sort decreasing permutation of N using triple swaps | Function to sort array.
Check if possible to sort array.
Swapping to bring element at required position Bringing at least one element at correct position.
Tracing changes in Array.
Print the sorted array.
If not possible to sort.
Driver code"
How can the above be solved in Python?
assistant
#Here is code to sort decreasing permutation of N using triple swaps and the other steps required.
 def sortArray ( A , N ) :
	if ( N % 4 == 0 or N % 4 == 1 ) :
		for i in range ( N // 2 ) :
			x = i
			if ( i % 2 == 0 ) :
				y = N - i - 2
				z = N - i - 1
			A [ z ] = A [ y ]
			A [ y ] = A [ x ]
			A [ x ] = x + 1
		print ( " Sorted ▁ Array : ▁ " , end = " " )
		for i in range ( N ) :
			print ( A [ i ] , end = " ▁ " )
	else :
		print ( " - 1" )
A = [ 5 , 4 , 3 , 2 , 1 ]
N = len ( A )
sortArray ( A , N )