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2373-largest-local-values-in-a-matrix/README.md

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+<h2><a href="https://leetcode.com/problems/largest-local-values-in-a-matrix">2373. Largest Local Values in a Matrix</a></h2><h3>Easy</h3><hr><p>You are given an <code>n x n</code> integer matrix <code>grid</code>.</p>
+
+<p>Generate an integer matrix <code>maxLocal</code> of size <code>(n - 2) x (n - 2)</code> such that:</p>
+
+<ul>
+	<li><code>maxLocal[i][j]</code> is equal to the <strong>largest</strong> value of the <code>3 x 3</code> matrix in <code>grid</code> centered around row <code>i + 1</code> and column <code>j + 1</code>.</li>
+</ul>
+
+<p>In other words, we want to find the largest value in every contiguous <code>3 x 3</code> matrix in <code>grid</code>.</p>
+
+<p>Return <em>the generated matrix</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+<img alt="" src="https://assets.leetcode.com/uploads/2022/06/21/ex1.png" style="width: 371px; height: 210px;" />
+<pre>
+<strong>Input:</strong> grid = [[9,9,8,1],[5,6,2,6],[8,2,6,4],[6,2,2,2]]
+<strong>Output:</strong> [[9,9],[8,6]]
+<strong>Explanation:</strong> The diagram above shows the original matrix and the generated matrix.
+Notice that each value in the generated matrix corresponds to the largest value of a contiguous 3 x 3 matrix in grid.</pre>
+
+<p><strong class="example">Example 2:</strong></p>
+<img alt="" src="https://assets.leetcode.com/uploads/2022/07/02/ex2new2.png" style="width: 436px; height: 240px;" />
+<pre>
+<strong>Input:</strong> grid = [[1,1,1,1,1],[1,1,1,1,1],[1,1,2,1,1],[1,1,1,1,1],[1,1,1,1,1]]
+<strong>Output:</strong> [[2,2,2],[2,2,2],[2,2,2]]
+<strong>Explanation:</strong> Notice that the 2 is contained within every contiguous 3 x 3 matrix in grid.
+</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;= 100</code></li>
+	<li><code>1 &lt;= grid[i][j] &lt;= 100</code></li>
+</ul>