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34 lines
1.3 KiB
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34 lines
1.3 KiB
HTML
<p>Given an <code>m x n</code> matrix <code>matrix</code> and an integer <code>k</code>, return <em>the max sum of a rectangle in the matrix such that its sum is no larger than</em> <code>k</code>.</p>
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<p>It is <strong>guaranteed</strong> that there will be a rectangle with a sum no larger than <code>k</code>.</p>
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<p> </p>
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<p><strong class="example">Example 1:</strong></p>
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<img alt="" src="https://assets.leetcode.com/uploads/2021/03/18/sum-grid.jpg" style="width: 255px; height: 176px;" />
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<pre>
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<strong>Input:</strong> matrix = [[1,0,1],[0,-2,3]], k = 2
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<strong>Output:</strong> 2
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<strong>Explanation:</strong> Because the sum of the blue rectangle [[0, 1], [-2, 3]] is 2, and 2 is the max number no larger than k (k = 2).
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</pre>
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<p><strong class="example">Example 2:</strong></p>
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<pre>
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<strong>Input:</strong> matrix = [[2,2,-1]], k = 3
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<strong>Output:</strong> 3
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</pre>
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<p> </p>
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<p><strong>Constraints:</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 <= 100</code></li>
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<li><code>-100 <= matrix[i][j] <= 100</code></li>
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<li><code>-10<sup>5</sup> <= k <= 10<sup>5</sup></code></li>
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</ul>
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<p> </p>
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<p><strong>Follow up:</strong> What if the number of rows is much larger than the number of columns?</p>
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