{ "data": { "question": { "questionId": "914", "questionFrontendId": "497", "boundTopicId": null, "title": "Random Point in Non-overlapping Rectangles", "titleSlug": "random-point-in-non-overlapping-rectangles", "content": "
You are given an array of non-overlapping axis-aligned rectangles rects
where rects[i] = [ai, bi, xi, yi]
indicates that (ai, bi)
is the bottom-left corner point of the ith
rectangle and (xi, yi)
is the top-right corner point of the ith
rectangle. Design an algorithm to pick a random integer point inside the space covered by one of the given rectangles. A point on the perimeter of a rectangle is included in the space covered by the rectangle.
Any integer point inside the space covered by one of the given rectangles should be equally likely to be returned.
\n\nNote that an integer point is a point that has integer coordinates.
\n\nImplement the Solution
class:
Solution(int[][] rects)
Initializes the object with the given rectangles rects
.int[] pick()
Returns a random integer point [u, v]
inside the space covered by one of the given rectangles.\n
Example 1:
\n\n\nInput\n["Solution", "pick", "pick", "pick", "pick", "pick"]\n[[[[-2, -2, 1, 1], [2, 2, 4, 6]]], [], [], [], [], []]\nOutput\n[null, [1, -2], [1, -1], [-1, -2], [-2, -2], [0, 0]]\n\nExplanation\nSolution solution = new Solution([[-2, -2, 1, 1], [2, 2, 4, 6]]);\nsolution.pick(); // return [1, -2]\nsolution.pick(); // return [1, -1]\nsolution.pick(); // return [-1, -2]\nsolution.pick(); // return [-2, -2]\nsolution.pick(); // return [0, 0]\n\n\n
\n
Constraints:
\n\n1 <= rects.length <= 100
rects[i].length == 4
-109 <= ai < xi <= 109
-109 <= bi < yi <= 109
xi - ai <= 2000
yi - bi <= 2000
104
calls will be made to pick
.Compiled with clang 11
using the latest C++ 17 standard.
Your code is compiled with level two optimization (-O2
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Most standard library headers are already included automatically for your convenience.
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\\r\\n\\r\\nFor hash table operations, you may use uthash. \\\"uthash.h\\\" is included by default. Below are some examples:
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Your code is compiled with debug flag enabled (/debug
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Node.js 16.13.2
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Your code is run with --harmony
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Go 1.17.6
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