{ "data": { "question": { "questionId": "85", "questionFrontendId": "85", "boundTopicId": null, "title": "Maximal Rectangle", "titleSlug": "maximal-rectangle", "content": "

Given a rows x cols binary matrix filled with 0's and 1's, find the largest rectangle containing only 1's and return its area.

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Example 1:

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\nInput: matrix = [["1","0","1","0","0"],["1","0","1","1","1"],["1","1","1","1","1"],["1","0","0","1","0"]]\nOutput: 6\nExplanation: The maximal rectangle is shown in the above picture.\n
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Example 2:

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\nInput: matrix = [["0"]]\nOutput: 0\n
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Example 3:

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\nInput: matrix = [["1"]]\nOutput: 1\n
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Constraints:

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