{ "data": { "question": { "questionId": "1253", "questionFrontendId": "1329", "categoryTitle": "Algorithms", "boundTopicId": 79261, "title": "Sort the Matrix Diagonally", "titleSlug": "sort-the-matrix-diagonally", "content": "

A matrix diagonal is a diagonal line of cells starting from some cell in either the topmost row or leftmost column and going in the bottom-right direction until reaching the matrix's end. For example, the matrix diagonal starting from mat[2][0], where mat is a 6 x 3 matrix, includes cells mat[2][0], mat[3][1], and mat[4][2].

\n\n

Given an m x n matrix mat of integers, sort each matrix diagonal in ascending order and return the resulting matrix.

\n\n

 

\n

Example 1:

\n\"\"\n
\nInput: mat = [[3,3,1,1],[2,2,1,2],[1,1,1,2]]\nOutput: [[1,1,1,1],[1,2,2,2],[1,2,3,3]]\n
\n\n

Example 2:

\n\n
\nInput: 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]]\nOutput: [[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]]\n
\n\n

 

\n

Constraints:

\n\n\n", "translatedTitle": "将矩阵按对角线排序", "translatedContent": "

矩阵对角线 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 mat63 列,从 mat[2][0] 开始的 矩阵对角线 将会经过 mat[2][0]mat[3][1]mat[4][2]

\n\n

给你一个 m * n 的整数矩阵 mat ,请你将同一条 矩阵对角线 上的元素按升序排序后,返回排好序的矩阵。

\n\n

 

\n\n

示例 1:

\n\n

\"\"

\n\n
\n输入:mat = [[3,3,1,1],[2,2,1,2],[1,1,1,2]]\n输出:[[1,1,1,1],[1,2,2,2],[1,2,3,3]]\n
\n\n

示例 2:

\n\n
\n输入: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]]\n输出:[[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]]\n
\n\n

 

\n\n

提示:

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