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tower_of _hanoi.py #9938

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53 changes: 53 additions & 0 deletions tower_of _hanoi.py
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def tower_of_hanoi(n: int, source_peg: str, auxiliary_peg: str, target_peg: str) -> None:
"""
Solve the Tower of Hanoi problem for 'n' disks.

Args:
n (int): The number of disks to move.
source_peg (str): The name of the source peg.
auxiliary_peg (str): The name of the auxiliary peg.
target_peg (str): The name of the target peg.

Returns:
None

Examples:
>>> tower_of_hanoi(1, 'A', 'B', 'C')
Move disk 1 from A to C

>>> tower_of_hanoi(3, 'A', 'B', 'C')
Move disk 1 from A to C
Move disk 2 from A to B
Move disk 1 from C to B
Move disk 3 from A to C
Move disk 1 from B to A
Move disk 2 from B to C
Move disk 1 from A to C
"""
if n == 1:
print(f"Move disk 1 from {source_peg} to {target_peg}")
return
tower_of_hanoi(n - 1, source_peg, target_peg, auxiliary_peg)
print(f"Move disk {n} from {source_peg} to {target_peg}")
tower_of_hanoi(n - 1, auxiliary_peg, source_peg, target_peg)

# Input from the user
if __name__ == "__main__":
n = int(input("Enter the number of disks: "))
source_peg = input("Enter the name of the source peg (e.g., 'A'): ").strip().upper()
auxiliary_peg = input("Enter the name of the auxiliary peg (e.g., 'B'): ").strip().upper()
target_peg = input("Enter the name of the target peg (e.g., 'C'): ").strip().upper()

# Ensure peg names are distinct
while source_peg == auxiliary_peg or source_peg == target_peg or auxiliary_peg == target_peg:
print("Peg names must be distinct. Please enter again.")
source_peg = input("Enter the name of the source peg: ").strip().upper()
auxiliary_peg = input("Enter the name of the auxiliary peg: ").strip().upper()
target_peg = input("Enter the name of the target peg: ").strip().upper()

# Call the tower_of_hanoi function with user input
tower_of_hanoi(n, source_peg, auxiliary_peg, target_peg)

For more:
https://github.com/TheAlgorithms/Python
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An error occurred while parsing the file: tower_of _hanoi.py

Traceback (most recent call last):
  File "/opt/render/project/src/algorithms_keeper/parser/python_parser.py", line 146, in parse
    reports = lint_file(
              ^^^^^^^^^^
libcst._exceptions.ParserSyntaxError: Syntax Error @ 52:9.
parser error: error at 51:8: expected one of !=, %, &, (, *, **, +, ,, -, ., /, //, :, ;, <, <<, <=, =, ==, >, >=, >>, @, NEWLINE, [, ^, and, if, in, is, not, or, |

 https://github.com/TheAlgorithms/Python
        ^

https://en.wikipedia.org/wiki/Tower_of_Hanoi