Added README.md file for Coloring A Border

Author: Vignesh010101

1104-coloring-a-border/README.md

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+<h2><a href="https://leetcode.com/problems/coloring-a-border">Coloring A Border</a></h2> <img src='https://img.shields.io/badge/Difficulty-Medium-orange' alt='Difficulty: Medium' /><hr><p>You are given an <code>m x n</code> integer matrix <code>grid</code>, and three integers <code>row</code>, <code>col</code>, and <code>color</code>. Each value in the grid represents the color of the grid square at that location.</p>
+
+<p>Two squares are called <strong>adjacent</strong> if they are next to each other in any of the 4 directions.</p>
+
+<p>Two squares belong to the same <strong>connected component</strong> if they have the same color and they are adjacent.</p>
+
+<p>The <strong>border of a connected component</strong> is all the squares in the connected component that are either adjacent to (at least) a square not in the component, or on the boundary of the grid (the first or last row or column).</p>
+
+<p>You should color the <strong>border</strong> of the <strong>connected component</strong> that contains the square <code>grid[row][col]</code> with <code>color</code>.</p>
+
+<p>Return <em>the final grid</em>.</p>
+
+<p>&nbsp;</p>
+<p><strong class="example">Example 1:</strong></p>
+<pre><strong>Input:</strong> grid = [[1,1],[1,2]], row = 0, col = 0, color = 3
+<strong>Output:</strong> [[3,3],[3,2]]
+</pre><p><strong class="example">Example 2:</strong></p>
+<pre><strong>Input:</strong> grid = [[1,2,2],[2,3,2]], row = 0, col = 1, color = 3
+<strong>Output:</strong> [[1,3,3],[2,3,3]]
+</pre><p><strong class="example">Example 3:</strong></p>
+<pre><strong>Input:</strong> grid = [[1,1,1],[1,1,1],[1,1,1]], row = 1, col = 1, color = 2
+<strong>Output:</strong> [[2,2,2],[2,1,2],[2,2,2]]
+</pre>
+<p>&nbsp;</p>
+<p><strong>Constraints:</strong></p>
+
+<ul>
+	<li><code>m == grid.length</code></li>
+	<li><code>n == grid[i].length</code></li>
+	<li><code>1 &lt;= m, n &lt;= 50</code></li>
+	<li><code>1 &lt;= grid[i][j], color &lt;= 1000</code></li>
+	<li><code>0 &lt;= row &lt; m</code></li>
+	<li><code>0 &lt;= col &lt; n</code></li>
+</ul>