[LeetCode] 850. Rectangle Area II 矩形面积之二

We are given a list of (axis-aligned)?rectangles.? Each?rectangle[i] = [x1, y1, x2, y2]?, where (x1, y1) are the coordinates of the bottom-left corner, and (x2, y2) are the coordinates of the top-right corner of the?ith rectangle.

Find the total area covered by all?rectangles?in the plane.? Since the answer?may be too large,?return it modulo 10^9 + 7.

Example 1:

Input: [[0,0,2,2],[1,0,2,3],[1,0,3,1]]
Output: 6
Explanation: As illustrated in the picture.

Example 2:

Input: [[0,0,1000000000,1000000000]]
Output: 49
Explanation: The answer is 10^18 modulo (10^9 + 7), which is (10^9)^2 = (-7)^2 = 49.

Note:

• 1 <= rectangles.length <= 200
• rectanges[i].length = 4
• 0 <= rectangles[i][j] <= 10^9
• The total area covered by all rectangles will never exceed?2^63 - 1?and thus will fit in a 64-bit signed integer.

Github 同步地址:

https://github.com/grandyang/leetcode/issues/850

类似题目：

Rectangle Area

参考资料：

https://leetcode.com/problems/rectangle-area-ii/

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原文：https://www.cnblogs.com/grandyang/p/11371256.html