{ "data": { "question": { "questionId": "566", "questionFrontendId": "566", "boundTopicId": null, "title": "Reshape the Matrix", "titleSlug": "reshape-the-matrix", "content": "

In MATLAB, there is a handy function called reshape which can reshape an m x n matrix into a new one with a different size r x c keeping its original data.

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You are given an m x n matrix mat and two integers r and c representing the number of rows and the number of columns of the wanted reshaped matrix.

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The reshaped matrix should be filled with all the elements of the original matrix in the same row-traversing order as they were.

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If the reshape operation with given parameters is possible and legal, output the new reshaped matrix; Otherwise, output the original matrix.

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Example 1:

\n\"\"\n
\nInput: mat = [[1,2],[3,4]], r = 1, c = 4\nOutput: [[1,2,3,4]]\n
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Example 2:

\n\"\"\n
\nInput: mat = [[1,2],[3,4]], r = 2, c = 4\nOutput: [[1,2],[3,4]]\n
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Constraints:

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(listof (listof exact-integer?)))\n\n )", "__typename": "CodeSnippetNode" }, { "lang": "Erlang", "langSlug": "erlang", "code": "-spec matrix_reshape(Mat :: [[integer()]], R :: integer(), C :: integer()) -> [[integer()]].\nmatrix_reshape(Mat, R, C) ->\n .", "__typename": "CodeSnippetNode" }, { "lang": "Elixir", "langSlug": "elixir", "code": "defmodule Solution do\n @spec matrix_reshape(mat :: [[integer]], r :: integer, c :: integer) :: [[integer]]\n def matrix_reshape(mat, r, c) do\n\n end\nend", "__typename": "CodeSnippetNode" } ], "stats": "{\"totalAccepted\": \"230.4K\", \"totalSubmission\": \"369K\", \"totalAcceptedRaw\": 230372, \"totalSubmissionRaw\": 369037, \"acRate\": \"62.4%\"}", "hints": [ "Do you know how 2d matrix is stored in 1d memory? 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Take some example and check this formula." ], "solution": { "id": "120", "canSeeDetail": false, "paidOnly": true, "hasVideoSolution": false, "paidOnlyVideo": true, "__typename": "ArticleNode" }, "status": null, "sampleTestCase": "[[1,2],[3,4]]\n1\n4", "metaData": "{\n \"name\": \"matrixReshape\",\n \"params\": [\n {\n \"name\": \"mat\",\n \"type\": \"integer[][]\"\n },\n {\n \"name\": \"r\",\n \"type\": \"integer\"\n },\n {\n \"name\": \"c\",\n \"type\": \"integer\"\n }\n ],\n \"return\": {\n \"type\": \"integer[][]\"\n }\n}", "judgerAvailable": true, "judgeType": "large", "mysqlSchemas": [], "enableRunCode": true, "enableTestMode": false, "enableDebugger": true, "envInfo": "{\"cpp\": [\"C++\", \"

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\\r\\n

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