A Range Module is a module that tracks ranges of numbers. Your task is to design and implement the following interfaces in an efficient manner.
addRange(int left, int right) Adds the half-open interval
[left, right), tracking every real number in that interval. Adding an interval that partially overlaps with currently tracked numbers should add any numbers in the interval
[left, right) that are not already tracked.
queryRange(int left, int right) Returns true if and only if every real number in the interval
[left, right) is currently being tracked.
removeRange(int left, int right) Stops tracking every real number currently being tracked in the interval
[left, right).
Example 1:
addRange(10, 20): null
removeRange(14, 16): null
queryRange(10, 14): true (Every number in [10, 14) is being tracked)
queryRange(13, 15): false (Numbers like 14, 14.03, 14.17 in [13, 15) are not being tracked)
queryRange(16, 17): true (The number 16 in [16, 17) is still being tracked, despite the remove operation)
Note:
A half open interval
[left, right) denotes all real numbers
left <= x < right.
0 < left < right < 10^9 in all calls to
addRange, queryRange, removeRange. The total number of calls to
addRange in a single test case is at most
1000. The total number of calls to
queryRange in a single test case is at most
5000. The total number of calls to
removeRange in a single test case is at most
1000.
题目：
三种操作：
1、加入线段
2、删除线段
3、是否命中线段
边界有点多，不是很好写！
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