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leetcode-cn/problem (Chinese)/将矩阵按对角线排序 [sort-the-matrix-diagonally].html Normal file
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<p><strong>矩阵对角线</strong> 是一条从矩阵最上面行或者最左侧列中的某个元素开始的对角线，沿右下方向一直到矩阵末尾的元素。例如，矩阵 <code>mat</code> 有 <code>6</code> 行 <code>3</code> 列，从 <code>mat[2][0]</code> 开始的 <strong>矩阵对角线</strong> 将会经过 <code>mat[2][0]</code>、<code>mat[3][1]</code> 和 <code>mat[4][2]</code> 。</p>
<p>给你一个 <code>m * n</code> 的整数矩阵 <code>mat</code> ，请你将同一条 <strong>矩阵对角线 </strong>上的元素按升序排序后，返回排好序的矩阵。</p>
<p> </p>
<p><strong>示例 1：</strong></p>
<p><img alt="" src="https://assets.leetcode-cn.com/aliyun-lc-upload/uploads/2020/01/25/1482_example_1_2.png" style="height: 198px; width: 500px;" /></p>
<pre>
<strong>输入：</strong>mat = [[3,3,1,1],[2,2,1,2],[1,1,1,2]]
<strong>输出：</strong>[[1,1,1,1],[1,2,2,2],[1,2,3,3]]
</pre>
<p><strong>示例 2：</strong></p>
<pre>
<strong>输入：</strong>mat = [[11,25,66,1,69,7],[23,55,17,45,15,52],[75,31,36,44,58,8],[22,27,33,25,68,4],[84,28,14,11,5,50]]
<strong>输出：</strong>[[5,17,4,1,52,7],[11,11,25,45,8,69],[14,23,25,44,58,15],[22,27,31,36,50,66],[84,28,75,33,55,68]]
</pre>
<p> </p>
<p><strong>提示：</strong></p>
<ul>
<li><code>m == mat.length</code></li>
<li><code>n == mat[i].length</code></li>
<li><code>1 <= m, n <= 100</code></li>
<li><code>1 <= mat[i][j] <= 100</code></li>
</ul>