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Smallest Derangement of Sequence | Python3 program to generate smallest derangement using priority queue ..
Generate Sequence and insert into a priority queue ..
Generate Least Derangement.
Print Derangement.
Driver code"
How can the above be solved in Python?

Write me a code to smallest Derangement of Sequence and the other steps required?
assistant
#Here is code to smallest Derangement of Sequence and the other steps required.
 def generate_derangement ( N ) :
	S = [ i for i in range ( N + 1 ) ]
	PQ = [ ]
	for i in range ( 1 , N + 1 ) :
		PQ . append ( S [ i ] )
	D = [ 0 ] * ( N + 1 )
	PQ . sort ( )
	for i in range ( 1 , N + 1 ) :
		PQ . sort ( )
		d = PQ [ 0 ]
		del PQ [ 0 ]
		if ( d != S [ i ] ) or ( i == N ) :
			D [ i ] = d
		else :
			PQ . sort ( )
			D [ i ] = PQ [ 0 ]
			del PQ [ 0 ]
			PQ . append ( d )
	if D [ N ] == S [ N ] :
		t = D [ N - 1 ]
		D [ N - 1 ] = D [ N ]
		D [ N ] = t
	for i in range ( 1 , N + 1 ) :
		print ( D [ i ] , end = " ▁ " )
	print ( )
generate_derangement ( 10 )