Table of Contents
Algorithm
ratInMaze
Example
Output
Home Backend Development C++ Can a mouse in a maze make multiple steps or jumps?

Can a mouse in a maze make multiple steps or jumps?

Aug 29, 2023 pm 12:17 PM
maze mouse multiple steps

Can a mouse in a maze make multiple steps or jumps?

The mouse in the maze problem is one of the well-known backtracking problems. Here we will see that the problem remains almost unchanged. Suppose an NxN maze M is given. The starting point is the upper left corner M[0, 0], and the end point is the lower right corner M[N – 1, N – 1]. A mouse is placed at the starting point. Our goal is to find a path from the starting point to the end point that allows the mouse to reach its destination. Here mice can jump (variant). Now there are some restrictions

  • The mouse can move right or down.
  • A 0 in a cell in the maze means that the cell is blocked.
  • Non-zero cells represent valid paths.
  • The number in a cell indicates the maximum number of jumps the rat can make from that cell.
  • ul>

    Algorithm

    ratInMaze

    begin
       if destination is reached, then
          print the solution matrix
       else
          1. Place the current cell inside the solution matrix as 1
          2. Move forward or jump (check max jump value) and recursively check if move leads to solution or not.
          3. If the move taken from the step 2 is not correct, then move down, and check it leads to the solution or not
          4. If none of the solutions in step 2 and 3 are correct, then make the current cell 0.
       end if
    end
    Copy after login

    Example

    #include <iostream>
    #define N 4
    using namespace std;
    void dispSolution(int sol[N][N]) {
       for (int i = 0; i < N; i++) {
          for (int j = 0; j < N; j++)
             cout << sol[i][j] << " ";
          cout << endl;
       }
    }
    bool isSafe(int maze[N][N], int x, int y) { //check whether x,y is valid or not
       // when (x, y) is outside of the maze, then return false
       if (x >= 0 && x < N && y >= 0 && y < N && maze[x][y] != 0)
          return true;
       return false;
    }
    bool ratMazeSolve(int maze[N][N], int x, int y, int sol[N][N]) {
       if (x == N - 1 && y == N - 1) { //if destination is found, return true
          sol[x][y] = 1;
          return true;
       }
       if (isSafe(maze, x, y)) {
          sol[x][y] = 1; //mark 1 into solution matrix
          for (int i = 1; i <= maze[x][y] && i < N; i++) {
             if (ratMazeSolve(maze, x + i, y, sol)) //move right
                return true;
             if (ratMazeSolve(maze, x, y + i, sol)) //move down
                return true;
          }
          sol[x][y] = 0; //if the solution is not valid, then make it 0
          return false;
       }
       return false;
    }
    bool solveMaze(int maze[N][N]) {
       int sol[N][N] = { { 0, 0, 0, 0 },
          { 0, 0, 0, 0 },
          { 0, 0, 0, 0 },
          { 0, 0, 0, 0 }
       };
       if (!ratMazeSolve(maze, 0, 0, sol)) {
          cout << "Solution doesn&#39;t exist";
          return false;
       }
       dispSolution(sol);
       return true;
    }
    main() {
       int maze[N][N] = { { 2, 1, 0, 0 },
          { 3, 0, 0, 1 },
          { 0, 1, 0, 1 },
          { 0, 0, 0, 1 }
       };
       solveMaze(maze);
    }
    Copy after login

    Output

    1 0 0 0
    1 0 0 1
    0 0 0 1
    0 0 0 1
    Copy after login

The above is the detailed content of Can a mouse in a maze make multiple steps or jumps?. For more information, please follow other related articles on the PHP Chinese website!

Statement of this Website
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn

Hot AI Tools

Undresser.AI Undress

Undresser.AI Undress

AI-powered app for creating realistic nude photos

AI Clothes Remover

AI Clothes Remover

Online AI tool for removing clothes from photos.

Undress AI Tool

Undress AI Tool

Undress images for free

Clothoff.io

Clothoff.io

AI clothes remover

AI Hentai Generator

AI Hentai Generator

Generate AI Hentai for free.

Hot Article

Repo: How To Revive Teammates
1 months ago By 尊渡假赌尊渡假赌尊渡假赌
R.E.P.O. Energy Crystals Explained and What They Do (Yellow Crystal)
2 weeks ago By 尊渡假赌尊渡假赌尊渡假赌
Hello Kitty Island Adventure: How To Get Giant Seeds
1 months ago By 尊渡假赌尊渡假赌尊渡假赌

Hot Tools

Notepad++7.3.1

Notepad++7.3.1

Easy-to-use and free code editor

SublimeText3 Chinese version

SublimeText3 Chinese version

Chinese version, very easy to use

Zend Studio 13.0.1

Zend Studio 13.0.1

Powerful PHP integrated development environment

Dreamweaver CS6

Dreamweaver CS6

Visual web development tools

SublimeText3 Mac version

SublimeText3 Mac version

God-level code editing software (SublimeText3)

How does the C   Standard Template Library (STL) work? How does the C Standard Template Library (STL) work? Mar 12, 2025 pm 04:50 PM

This article explains the C Standard Template Library (STL), focusing on its core components: containers, iterators, algorithms, and functors. It details how these interact to enable generic programming, improving code efficiency and readability t

How do I use algorithms from the STL (sort, find, transform, etc.) efficiently? How do I use algorithms from the STL (sort, find, transform, etc.) efficiently? Mar 12, 2025 pm 04:52 PM

This article details efficient STL algorithm usage in C . It emphasizes data structure choice (vectors vs. lists), algorithm complexity analysis (e.g., std::sort vs. std::partial_sort), iterator usage, and parallel execution. Common pitfalls like

How does dynamic dispatch work in C   and how does it affect performance? How does dynamic dispatch work in C and how does it affect performance? Mar 17, 2025 pm 01:08 PM

The article discusses dynamic dispatch in C , its performance costs, and optimization strategies. It highlights scenarios where dynamic dispatch impacts performance and compares it with static dispatch, emphasizing trade-offs between performance and

How do I use ranges in C  20 for more expressive data manipulation? How do I use ranges in C 20 for more expressive data manipulation? Mar 17, 2025 pm 12:58 PM

C 20 ranges enhance data manipulation with expressiveness, composability, and efficiency. They simplify complex transformations and integrate into existing codebases for better performance and maintainability.

How do I use move semantics in C   to improve performance? How do I use move semantics in C to improve performance? Mar 18, 2025 pm 03:27 PM

The article discusses using move semantics in C to enhance performance by avoiding unnecessary copying. It covers implementing move constructors and assignment operators, using std::move, and identifies key scenarios and pitfalls for effective appl

How do I handle exceptions effectively in C  ? How do I handle exceptions effectively in C ? Mar 12, 2025 pm 04:56 PM

This article details effective exception handling in C , covering try, catch, and throw mechanics. It emphasizes best practices like RAII, avoiding unnecessary catch blocks, and logging exceptions for robust code. The article also addresses perf

How does C  's memory management work, including new, delete, and smart pointers? How does C 's memory management work, including new, delete, and smart pointers? Mar 17, 2025 pm 01:04 PM

C memory management uses new, delete, and smart pointers. The article discusses manual vs. automated management and how smart pointers prevent memory leaks.

How do I use rvalue references effectively in C  ? How do I use rvalue references effectively in C ? Mar 18, 2025 pm 03:29 PM

Article discusses effective use of rvalue references in C for move semantics, perfect forwarding, and resource management, highlighting best practices and performance improvements.(159 characters)

See all articles