Check Knight Tour Configuration
<p>There is a knight on an <code>n x n</code> chessboard. In a valid configuration, the knight starts <strong>at the top-left cell</strong> of the board and visits every cell on the board <strong>exactly once</strong>.</p>

<p>You are given an <code>n x n</code> integer matrix <code>grid</code> consisting of distinct integers from the range <code>[0, n * n - 1]</code> where <code>grid[row][col]</code> indicates that the cell <code>(row, col)</code> is the <code>grid[row][col]<sup>th</sup></code> cell that the knight visited. The moves are <strong>0-indexed</strong>.</p>

<p>Return <code>true</code> <em>if</em> <code>grid</code> <em>represents a valid configuration of the knight&#39;s movements or</em> <code>false</code> <em>otherwise</em>.</p>

<p><strong>Note</strong> that a valid knight move consists of moving two squares vertically and one square horizontally, or two squares horizontally and one square vertically. The figure below illustrates all the possible eight moves of a knight from some cell.</p>
<img alt="" src="https://assets.leetcode.com/uploads/2018/10/12/knight.png" style="width: 300px; height: 300px;" />
<p>&nbsp;</p>
<p><strong class="example">Example 1:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2022/12/28/yetgriddrawio-5.png" style="width: 251px; height: 251px;" />
<pre>
<strong>Input:</strong> grid = [[0,11,16,5,20],[17,4,19,10,15],[12,1,8,21,6],[3,18,23,14,9],[24,13,2,7,22]]
<strong>Output:</strong> true
<strong>Explanation:</strong> The above diagram represents the grid. It can be shown that it is a valid configuration.
</pre>

<p><strong class="example">Example 2:</strong></p>
<img alt="" src="https://assets.leetcode.com/uploads/2022/12/28/yetgriddrawio-6.png" style="width: 151px; height: 151px;" />
<pre>
<strong>Input:</strong> grid = [[0,3,6],[5,8,1],[2,7,4]]
<strong>Output:</strong> false
<strong>Explanation:</strong> The above diagram represents the grid. The 8<sup>th</sup> move of the knight is not valid considering its position after the 7<sup>th</sup> move.
</pre>

<p>&nbsp;</p>
<p><strong>Constraints:</strong></p>

<ul>
	<li><code>n == grid.length == grid[i].length</code></li>
	<li><code>3 &lt;= n &lt;= 7</code></li>
	<li><code>0 &lt;= grid[row][col] &lt; n * n</code></li>
	<li>All integers in <code>grid</code> are <strong>unique</strong>.</li>
</ul>

['minimum-knight-moves', 'maximum-number-of-moves-to-kill-all-pawns']
[]
[{"value": "cpp", "text": "C++", "defaultCode": "class Solution {\npublic:\n    bool checkValidGrid(vector<vector<int>>& grid) {\n        \n    }\n};"}, {"value": "java", "text": "Java", "defaultCode": "class Solution {\n    public boolean checkValidGrid(int[][] grid) {\n        \n    }\n}"}, {"value": "python", "text": "Python", "defaultCode": "class Solution(object):\n    def checkValidGrid(self, grid):\n        \"\"\"\n        :type grid: List[List[int]]\n        :rtype: bool\n        \"\"\"\n        "}, {"value": "python3", "text": "Python3", "defaultCode": "class Solution:\n    def checkValidGrid(self, grid: List[List[int]]) -> bool:\n        "}, {"value": "c", "text": "C", "defaultCode": "bool checkValidGrid(int** grid, int gridSize, int* gridColSize) {\n    \n}"}, {"value": "csharp", "text": "C#", "defaultCode": "public class Solution {\n    public bool CheckValidGrid(int[][] grid) {\n        \n    }\n}"}, {"value": "javascript", "text": "JavaScript", "defaultCode": "/**\n * @param {number[][]} grid\n * @return {boolean}\n */\nvar checkValidGrid = function(grid) {\n    \n};"}, {"value": "typescript", "text": "TypeScript", "defaultCode": "function checkValidGrid(grid: number[][]): boolean {\n    \n};"}, {"value": "php", "text": "PHP", "defaultCode": "class Solution {\n\n    /**\n     * @param Integer[][] $grid\n     * @return Boolean\n     */\n    function checkValidGrid($grid) {\n        \n    }\n}"}, {"value": "swift", "text": "Swift", "defaultCode": "class Solution {\n    func checkValidGrid(_ grid: [[Int]]) -> Bool {\n        \n    }\n}"}, {"value": "kotlin", "text": "Kotlin", "defaultCode": "class Solution {\n    fun checkValidGrid(grid: Array<IntArray>): Boolean {\n        \n    }\n}"}, {"value": "dart", "text": "Dart", "defaultCode": "class Solution {\n  bool checkValidGrid(List<List<int>> grid) {\n    \n  }\n}"}, {"value": "golang", "text": "Go", "defaultCode": "func checkValidGrid(grid [][]int) bool {\n    \n}"}, {"value": "ruby", "text": "Ruby", "defaultCode": "# @param {Integer[][]} grid\n# @return {Boolean}\ndef check_valid_grid(grid)\n    \nend"}, {"value": "scala", "text": "Scala", "defaultCode": "object Solution {\n    def checkValidGrid(grid: Array[Array[Int]]): Boolean = {\n        \n    }\n}"}, {"value": "rust", "text": "Rust", "defaultCode": "impl Solution {\n    pub fn check_valid_grid(grid: Vec<Vec<i32>>) -> bool {\n        \n    }\n}"}, {"value": "racket", "text": "Racket", "defaultCode": "(define/contract (check-valid-grid grid)\n  (-> (listof (listof exact-integer?)) boolean?)\n  )"}, {"value": "erlang", "text": "Erlang", "defaultCode": "-spec check_valid_grid(Grid :: [[integer()]]) -> boolean().\ncheck_valid_grid(Grid) ->\n  ."}, {"value": "elixir", "text": "Elixir", "defaultCode": "defmodule Solution do\n  @spec check_valid_grid(grid :: [[integer]]) :: boolean\n  def check_valid_grid(grid) do\n    \n  end\nend"}]
{
  "name": "checkValidGrid",
  "params": [
    {
      "name": "grid",
      "type": "integer[][]"
    }
  ],
  "return": {
    "type": "boolean"
  }
}
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Using compile arguments: <code>--enable-preview --release 21</code></p>\r\n\r\n<p>Most standard library headers are already included automatically for your convenience.</p>\r\n<p>Includes <code>Pair</code> class from https://docs.oracle.com/javase/8/javafx/api/javafx/util/Pair.html.</p>"], "python": ["Python", "<p><code>Python 2.7.18</code>.</p>\r\n\r\n<p>Most libraries are already imported automatically for your convenience, such as <a href=\"https://docs.python.org/2/library/array.html\" target=\"_blank\">array</a>, <a href=\"https://docs.python.org/2/library/bisect.html\" target=\"_blank\">bisect</a>, <a href=\"https://docs.python.org/2/library/collections.html\" target=\"_blank\">collections</a>. 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For the latest Python, please choose Python3 instead.</p>"], "c": ["C", "<p>Compiled with <code>gcc 14</code> using the gnu11 standard.</p>\r\n\r\n<p>Your code is compiled with level one optimization (<code>-O2</code>). <a href=\"https://github.com/google/sanitizers/wiki/AddressSanitizer\" target=\"_blank\">AddressSanitizer</a> is also enabled to help detect out-of-bounds and use-after-free bugs.</p>\r\n\r\n<p>Most standard library headers are already included automatically for your convenience.</p>\r\n\r\n<p>For hash table operations, you may use <a href=\"https://troydhanson.github.io/uthash/\" target=\"_blank\">uthash</a>. \"uthash.h\" is included by default. Below are some examples:</p>\r\n\r\n<p><b>1. Adding an item to a hash.</b>\r\n<pre>\r\nstruct hash_entry {\r\n    int id;            /* we'll use this field as the key */\r\n    char name[10];\r\n    UT_hash_handle hh; /* makes this structure hashable */\r\n};\r\n\r\nstruct hash_entry *users = NULL;\r\n\r\nvoid add_user(struct hash_entry *s) {\r\n    HASH_ADD_INT(users, id, s);\r\n}\r\n</pre>\r\n</p>\r\n\r\n<p><b>2. Looking up an item in a hash:</b>\r\n<pre>\r\nstruct hash_entry *find_user(int user_id) {\r\n    struct hash_entry *s;\r\n    HASH_FIND_INT(users, &user_id, s);\r\n    return s;\r\n}\r\n</pre>\r\n</p>\r\n\r\n<p><b>3. 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If you need more libraries, you can import it yourself.</p>\r\n\r\n<p>For Map/TreeMap data structure, you may use <a href=\"http://www.grantjenks.com/docs/sortedcontainers/\" target=\"_blank\">sortedcontainers</a> library.</p>"], "scala": ["Scala", "<p><code>Scala 3.3.1</code>.</p>"], "kotlin": ["Kotlin", "<p><code>Kotlin 2.1.10</code>.</p>"], "rust": ["Rust", "<p><code>Rust 1.85.0</code>. Your code will be compiled with <code>opt-level</code> 2.</p>\r\n\r\n<p>Supports <a href=\"https://crates.io/crates/rand\" target=\"_blank\">rand v0.8</a> and <a href=\"https://crates.io/crates/regex\" target=\"_blank\">regex\u00a0v1</a> and <a href=\"https://crates.io/crates/itertools\" target=\"_blank\">itertools\u00a0v0.14</a> from crates.io</p>"], "php": ["PHP", "<p><code>PHP 8.2</code>.</p>\r\n<p>With bcmath module</p>"], "typescript": ["Typescript", "<p><code>TypeScript 5.7.3, Node.js 22.14.0</code>.</p>\r\n\r\n<p>Compile Options: <code>--alwaysStrict --strictBindCallApply --strictFunctionTypes --target ES2024</code></p>\r\n\r\n<p><a href=\"https://lodash.com\" target=\"_blank\">lodash.js</a> library is included by default.</p>\r\n\r\n<p>For Priority Queue / Queue data structures, you may use 6.3.2 version of <a href=\"https://github.com/datastructures-js/priority-queue/tree/v6.3.2\" target=\"_blank\">datastructures-js/priority-queue</a> and 4.2.3 version of <a href=\"https://github.com/datastructures-js/queue/tree/v4.2.3\" target=\"_blank\">datastructures-js/queue</a> and 1.0.4 version of <a href=\"https://github.com/datastructures-js/deque/tree/v1.0.4\" target=\"_blank\">datastructures-js/deque</a>.</p>"], "racket": ["Racket", "<p><a href=\"https://docs.racket-lang.org/guide/performance.html#%28tech._c%29\" target=\"_blank\">Racket CS</a> v8.15</p>\r\n\r\n<p>Using <code>#lang racket</code></p>\r\n\r\n<p>Required <code>data/gvector data/queue data/order data/heap</code> automatically for your convenience</p>"], "erlang": ["Erlang", "Erlang/OTP 26"], "elixir": ["Elixir", "Elixir 1.17 with Erlang/OTP 26"], "dart": ["Dart", "<p>Dart 3.2. You may use package <a href=\"https://pub.dev/packages/collection/versions/1.18.0\" target=\"_blank\">collection</a></p>\r\n\r\n<p>Your code will be run directly without compiling</p>"]}
['Array', 'Depth-First Search', 'Breadth-First Search', 'Matrix', 'Simulation']