Package g0001_0100.s0048_rotate_image
Class Solution
java.lang.Object
g0001_0100.s0048_rotate_image.Solution
48 - Rotate Image.<p>Medium</p>
<p>You are given an <code>n x n</code> 2D <code>matrix</code> representing an image, rotate the image by <strong>90</strong> degrees (clockwise).</p>
<p>You have to rotate the image <a href="https://en.wikipedia.org/wiki/In-place_algorithm" target="_top"><strong>in-place</strong></a>, which means you have to modify the input 2D matrix directly. <strong>DO NOT</strong> allocate another 2D matrix and do the rotation.</p>
<p><strong>Example 1:</strong></p>
<p><img src="https://assets.leetcode.com/uploads/2020/08/28/mat1.jpg" alt="" /></p>
<p><strong>Input:</strong> matrix = [[1,2,3],[4,5,6],[7,8,9]]</p>
<p><strong>Output:</strong> [[7,4,1],[8,5,2],[9,6,3]]</p>
<p><strong>Example 2:</strong></p>
<p><img src="https://assets.leetcode.com/uploads/2020/08/28/mat2.jpg" alt="" /></p>
<p><strong>Input:</strong> matrix = [[5,1,9,11],[2,4,8,10],[13,3,6,7],[15,14,12,16]]</p>
<p><strong>Output:</strong> [[15,13,2,5],[14,3,4,1],[12,6,8,9],[16,7,10,11]]</p>
<p><strong>Example 3:</strong></p>
<p><strong>Input:</strong> matrix = [[1]]</p>
<p><strong>Output:</strong> <a href="1">1</a></p>
<p><strong>Example 4:</strong></p>
<p><strong>Input:</strong> matrix = [[1,2],[3,4]]</p>
<p><strong>Output:</strong> [[3,1],[4,2]]</p>
<p><strong>Constraints:</strong></p>
<ul>
<li><code>matrix.length == n</code></li>
<li><code>matrix[i].length == n</code></li>
<li><code>1 <= n <= 20</code></li>
<li><code>-1000 <= matrix[i][j] <= 1000</code></li>
</ul>
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Constructor Summary
Constructors -
Method Summary
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Constructor Details
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Solution
public Solution()
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Method Details
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rotate
public void rotate(int[][] matrix)
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