Dec 13, 2019 · Dec 14, 2019 · Dec 23, 2019 · Dec 23, 2019
diff --git a/ch09-lists-tuples-and-dictionaries/9a-challenge-cats-with-hats b/ch09-lists-tuples-and-dictionaries/9a-challenge-cats-with-hats
 # At the start all cats are hatless.
 cats = [False]*101

 # We do a loop over each step size from 1 to 100
 for step_size in range(1, 100 + 1):

    # For each step size we calculate how many cats we are going to visit
    cats_to_visit = 100 // step_size

    # We only loop over cat indices that are a multiple of our step size
    for i in range(1, cats_to_visit + 1):

        # We reverse the hat status for each cat we loop over
        cats[i*step_size] = not cats[i*step_size]

 # Print the list of cats that have a hat
 for i in range(101):
    if cats[i]:
        print(f"Cat {i} has a hat!")
Original file line number	Diff line number	Diff line change
		@@ -0,0 +1,19 @@
		# At the start all cats are hatless.
		cats = [False]*101

		# We do a loop over each step size from 1 to 100
		for step_size in range(1, 100 + 1):

		# For each step size we calculate how many cats we are going to visit
		cats_to_visit = 100 // step_size

		# We only loop over cat indices that are a multiple of our step size
		for i in range(1, cats_to_visit + 1):

		# We reverse the hat status for each cat we loop over
		cats[istep_size] = not cats[istep_size]

		# Print the list of cats that have a hat
		for i in range(101):
		if cats[i]:
		print(f"Cat {i} has a hat!")