nathan-cruz77 · August 22, 2019 03:13
diff --git a/fold.py b/fold.py
 from itertools import chain

 # Fold iterable into itself.
 # 
 # 
 # Sample usage:
 # 
 #   >>> list(fold([1, 2, 3]))
 #   [1, 2, 3, 2, 1]
 # 
 #   >>> list(fold([1, 2]))
 #   [1, 2, 1]
 # 
 def fold(iterator):
    reverse = reversed(iterator)
    next(reverse, None)
    return chain(iterator, reverse)
	from itertools import chain

	# Fold iterable into itself.
	#
	#
	# Sample usage:
	#
	# >>> list(fold([1, 2, 3]))
	# [1, 2, 3, 2, 1]
	#
	# >>> list(fold([1, 2]))
	# [1, 2, 1]
	#
	def fold(iterator):
	reverse = reversed(iterator)
	next(reverse, None)
	return chain(iterator, reverse)