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Copy pathLearn Recursion by Solving the Tower of.py
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Learn Recursion by Solving the Tower of.py
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# Learn Recursion by Solving the Tower of Hanoi Puzzle
# First solution this seems conuluted and I hope the second solution is much better
NUMBER_OF_DISKS = 4
number_of_moves = 2**NUMBER_OF_DISKS - 1
rods = {"A": list(range(NUMBER_OF_DISKS, 0, -1)), "B": [], "C": []}
def make_allowed_move(rod1, rod2):
forward = False
if not rods[rod2]:
forward = True
elif rods[rod1] and rods[rod1][-1] < rods[rod2][-1]:
forward = True
if forward:
print(f"Moving disk {rods[rod1][-1]} from {rod1} to {rod2}")
rods[rod2].append(rods[rod1].pop())
else:
print(f"Moving disk {rods[rod2][-1]} from {rod2} to {rod1}")
rods[rod1].append(rods[rod2].pop())
# display our progress
print(rods, "\n")
def move(n, source, auxiliary, target):
# display starting configuration
print(rods, "\n")
for i in range(number_of_moves):
remainder = (i + 1) % 3
if remainder == 1:
if n % 2 != 0:
print(f"Move {i + 1} allowed between {source} and {target}")
make_allowed_move(source, target)
else:
print(f"Move {i + 1} allowed between {source} and {auxiliary}")
make_allowed_move(source, auxiliary)
elif remainder == 2:
if n % 2 != 0:
print(f"Move {i + 1} allowed between {source} and {auxiliary}")
make_allowed_move(source, auxiliary)
else:
print(f"Move {i + 1} allowed between {source} and {target}")
make_allowed_move(source, target)
elif remainder == 0:
print(f"Move {i + 1} allowed between {auxiliary} and {target}")
make_allowed_move(auxiliary, target)
# initiate call from source A to target C with auxiliary B
move(NUMBER_OF_DISKS, "A", "B", "C")