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47 lines
1.7 KiB
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47 lines
1.7 KiB
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<p>给定一个 <code>m x n</code> 整数矩阵 <code>matrix</code> ，找出其中 <strong>最长递增路径</strong> 的长度。</p>
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<p>对于每个单元格，你可以往上，下，左，右四个方向移动。 <strong>不能</strong> 在 <strong>对角线</strong> 方向上移动或移动到 <strong>边界外</strong>（即不允许环绕）。</p>
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<p> </p>
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<p><strong>示例 1：</strong></p>
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<p><img alt="" src="https://assets.leetcode.com/uploads/2021/01/05/grid1.jpg" style="width: 242px; height: 242px;" /></p>
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<pre>
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<strong>输入：</strong>matrix = [[9,9,4],[6,6,8],[2,1,1]]
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<strong>输出：</strong>4
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<strong>解释：</strong>最长递增路径为 <code>[1, 2, 6, 9]</code>。</pre>
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<p><strong>示例 2：</strong></p>
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<p><img alt="" src="https://assets.leetcode.com/uploads/2021/01/27/tmp-grid.jpg" style="width: 253px; height: 253px;" /></p>
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<pre>
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<strong>输入：</strong>matrix = [[3,4,5],[3,2,6],[2,2,1]]
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<strong>输出：</strong>4
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<strong>解释：</strong>最长递增路径是 <code>[3, 4, 5, 6]</code>。注意不允许在对角线方向上移动。
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</pre>
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<p><strong>示例 3：</strong></p>
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<pre>
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<strong>输入：</strong>matrix = [[1]]
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<strong>输出：</strong>1
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</pre>
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<p> </p>
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<p><strong>提示：</strong></p>
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<ul>
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<li><code>m == matrix.length</code></li>
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<li><code>n == matrix[i].length</code></li>
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<li><code>1 <= m, n <= 200</code></li>
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<li><code>0 <= matrix[i][j] <= 2<sup>31</sup> - 1</code></li>
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</ul>
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<p> </p>
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<p><meta charset="UTF-8" />注意：本题与主站 329 题相同： <a href="https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix/">https://leetcode-cn.com/problems/longest-increasing-path-in-a-matrix/</a></p>
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