human
Write me a code to flatten a multi and the other steps required given the following:
Flatten a multi |"
Solution in Python:
assistant
#Here is code to flatten a multi and the other steps required.
 def flattenList2 ( head ) :
	headcop = head
	save = [ ]
	save . append ( head )
	prev = None
	while ( len ( save ) != 0 ) :
		temp = save [ - 1 ]
		save . pop ( )
		if ( temp . next ) :
			save . append ( temp . next )
		if ( temp . down ) :
			save . append ( temp . down )
		if ( prev != None ) :
			prev . next = temp
		prev = temp
	return headcop