mirror of
https://gitee.com/coder-xiaomo/leetcode-problemset
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77 lines
12 KiB
JSON
77 lines
12 KiB
JSON
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{
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"data": {
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"question": {
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"questionId": "2268",
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"questionFrontendId": "2128",
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"categoryTitle": "Algorithms",
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"boundTopicId": 1194274,
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"title": "Remove All Ones With Row and Column Flips",
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"titleSlug": "remove-all-ones-with-row-and-column-flips",
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"content": null,
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"translatedTitle": "通过翻转行或列来去除所有的 1",
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"translatedContent": null,
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"isPaidOnly": true,
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"difficulty": "Medium",
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"likes": 5,
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"dislikes": 0,
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"isLiked": null,
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"similarQuestions": "[]",
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"topicTags": [
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{
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"name": "Bit Manipulation",
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"slug": "bit-manipulation",
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"translatedName": "位运算",
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"__typename": "TopicTagNode"
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},
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{
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"name": "Array",
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"slug": "array",
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"translatedName": "数组",
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"__typename": "TopicTagNode"
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},
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{
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"name": "Math",
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"slug": "math",
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"translatedName": "数学",
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"__typename": "TopicTagNode"
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},
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{
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"name": "Matrix",
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"slug": "matrix",
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"translatedName": "矩阵",
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"__typename": "TopicTagNode"
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}
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],
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"stats": "{\"totalAccepted\": \"166\", \"totalSubmission\": \"244\", \"totalAcceptedRaw\": 166, \"totalSubmissionRaw\": 244, \"acRate\": \"68.0%\"}",
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"hints": [
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"Does the order, in which you do the operations, matter?",
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"No, it does not. An element will keep its original value if the number of operations done on it is even and vice versa. This also means that doing more than 1 operation on the same row or column is unproductive.",
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"Try working backward, start with a matrix of all zeros and try to construct grid using operations.",
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"Start with operations on columns, after doing them what do you notice about each row?",
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"Each row is the exact same. If we then flip some rows, that leaves only two possible arrangements for each row: the same as the original or the opposite."
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],
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"solution": null,
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"status": null,
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"sampleTestCase": "[[0,1,0],[1,0,1],[0,1,0]]",
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"metaData": "{\n \"name\": \"removeOnes\",\n \"params\": [\n {\n \"name\": \"grid\",\n \"type\": \"integer[][]\"\n }\n ],\n \"return\": {\n \"type\": \"boolean\"\n }\n}",
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"judgeType": "large",
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