[Python] How to implement stack-based backtracking for maze navigation with limited size...

Discussão em 'Python' iniciado por Stack, Novembro 28, 2025.

  1. Stack

    Stack Membro Participativo

    I am a university student working on a Data Structures lab about using a stack to simulate maze navigation. The stack must have a fixed capacity of 25 moves.

    I don't have any code yet. I need help understanding the logic and a working Python example if possible.

    Problem Description


    In the maze:

    ActionStack OperationMove forwardpushReach dead-endpop (backtrack)Check current movepeekFull stackOverflow errorEmpty stack popUnderflow error

    The top of the stack represents the current position in the maze.

    Required Movement Simulation


    Move → push
    Move → push
    Dead end → pop
    Move → push
    Move → push
    Try one more push beyond capacity (overflow test)
    Pop all moves to return to entrance

    Example of expected output


    I need to print the stack contents after each operation like this:

    StepOperationDirectionStack ContentStatus1PushLeft
    Not full2PushRight[Left, Right]Not full3Pop–
    Not empty4PushForward[Left, Forward]Not full5PushLeft[Left, Forward, Left]Not full6PushRight—Overflow

    What help I need


    1. How to properly implement stack operations (push, pop, peek) using an array or list in Python (not using built-in stack libraries).


    2. How to check for:

      • Stack overflow (when full)


      • Stack underflow (when empty)

    3. How to simulate maze movement using stack logic.


    4. How to print stack state after each operation.

    A complete Python code example would be very helpful.

    Extra context (for conceptual understanding only)


    • Why is stack ideal for backtracking?


    • How does LIFO appear in real-life maze traversal?


    • What would change if the stack had unlimited size?
    Preferred language


    Python (without external libraries)

    Final note


    I am trying to understand how stack logic is applied to real-world scenarios like maze navigation.
    A clear explanation with Python implementation would be greatly appreciated.
    Thank you!

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