{ "data": { "question": { "questionId": "3657", "questionFrontendId": "3394", "categoryTitle": "Algorithms", "boundTopicId": 3025441, "title": "Check if Grid can be Cut into Sections", "titleSlug": "check-if-grid-can-be-cut-into-sections", "content": "
You are given an integer n
representing the dimensions of an n x n
grid, with the origin at the bottom-left corner of the grid. You are also given a 2D array of coordinates rectangles
, where rectangles[i]
is in the form [startx, starty, endx, endy]
, representing a rectangle on the grid. Each rectangle is defined as follows:
(startx, starty)
: The bottom-left corner of the rectangle.(endx, endy)
: The top-right corner of the rectangle.Note that the rectangles do not overlap. Your task is to determine if it is possible to make either two horizontal or two vertical cuts on the grid such that:
\n\nReturn true
if such cuts can be made; otherwise, return false
.
\n
Example 1:
\n\nInput: n = 5, rectangles = [[1,0,5,2],[0,2,2,4],[3,2,5,3],[0,4,4,5]]
\n\nOutput: true
\n\nExplanation:
\n\nThe grid is shown in the diagram. We can make horizontal cuts at y = 2
and y = 4
. Hence, output is true.
Example 2:
\n\nInput: n = 4, rectangles = [[0,0,1,1],[2,0,3,4],[0,2,2,3],[3,0,4,3]]
\n\nOutput: true
\n\nExplanation:
\n\nWe can make vertical cuts at x = 2
and x = 3
. Hence, output is true.
Example 3:
\n\nInput: n = 4, rectangles = [[0,2,2,4],[1,0,3,2],[2,2,3,4],[3,0,4,2],[3,2,4,4]]
\n\nOutput: false
\n\nExplanation:
\n\nWe cannot make two horizontal or two vertical cuts that satisfy the conditions. Hence, output is false.
\n\n
Constraints:
\n\n3 <= n <= 109
3 <= rectangles.length <= 105
0 <= rectangles[i][0] < rectangles[i][2] <= n
0 <= rectangles[i][1] < rectangles[i][3] <= n
给你一个整数 n
表示一个 n x n
的网格图,坐标原点是这个网格图的左下角。同时给你一个二维坐标数组 rectangles
,其中 rectangles[i]
的格式为 [startx, starty, endx, endy]
,表示网格图中的一个矩形。每个矩形定义如下:
(startx, starty)
:矩形的左下角。(endx, endy)
:矩形的右上角。注意 ,矩形相互之间不会重叠。你的任务是判断是否能找到两条 要么都垂直要么都水平 的 两条切割线 ,满足:
\n\n如果可以得到这样的切割,请你返回 true
,否则返回 false
。
\n\n
示例 1:
\n\n输入:n = 5, rectangles = [[1,0,5,2],[0,2,2,4],[3,2,5,3],[0,4,4,5]]
\n\n输出:true
\n\n解释:
\n\n网格图如上所示,我们可以在 y = 2
和 y = 4
处进行水平切割,所以返回 true 。
示例 2:
\n\n输入:n = 4, rectangles = [[0,0,1,1],[2,0,3,4],[0,2,2,3],[3,0,4,3]]
\n\n输出:true
\n\n解释:
\n\n我们可以在 x = 2
和 x = 3
处进行竖直切割,所以返回 true 。
示例 3:
\n\n输入:n = 4, rectangles = [[0,2,2,4],[1,0,3,2],[2,2,3,4],[3,0,4,2],[3,2,4,4]]
\n\n输出:false
\n\n解释:
\n\n我们无法进行任何两条水平或者两条竖直切割并且满足题目要求,所以返回 false 。
\n\n\n
提示:
\n\n3 <= n <= 109
3 <= rectangles.length <= 105
0 <= rectangles[i][0] < rectangles[i][2] <= n
0 <= rectangles[i][1] < rectangles[i][3] <= n
[start_x, end_x]
and [start_y, end_y]
separately.",
"For x and y directions, check whether we can split it into 3 parts."
],
"solution": null,
"status": null,
"sampleTestCase": "5\n[[1,0,5,2],[0,2,2,4],[3,2,5,3],[0,4,4,5]]",
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