一个方法解决三道区间问题

1288. 删除被覆盖区间 https://leetcode.cn/problems/remove-covered-intervals

1288. Remove Covered Intervals https://leetcode.com/problems/remove-covered-intervals

56. 合并区间 https://leetcode.cn/problems/merge-intervals

56. Merge Intervals https://leetcode.com/problems/merge-intervals

986. 区间列表的交集 https://leetcode.cn/problems/interval-list-intersections

986. Interval List Intersections https://leetcode.com/problems/interval-list-intersections

剑指 Offer II 074. 合并区间 https://leetcode.cn/problems/SsGoHC

剑指 Offer II 074. 合并区间 https://leetcode.com/problems/SsGoHC

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已完成网站教程、网站习题、配套插件中所有多语言代码的校准，解决了之前 chatGPT 翻译可能出错的问题~

读完本文，你不仅学会了算法套路，还可以顺便解决如下题目：

LeetCode	Difficulty
1288. Remove Covered Intervals	🟠
56. Merge Intervals	🟠
986. Interval List Intersections	🟠

Many readers often ask about interval-related problems. Today, I'm writing an article to tackle three such problems efficiently.

Interval problems are essentially segment problems, where you need to merge all segments, find their intersections, etc. There are two main techniques:

1. Sorting. The common approach is to sort by the starting point of the intervals. Alternatively, you can sort by the starting point in ascending order and, if the starting points are the same, sort by the ending point in descending order. Of course, if you prefer to sort by the ending point, it's just a symmetric operation; the essence remains the same.

2. Drawing. This means don't be lazy; be hands-on. Understand the different possible relative positions of two intervals and how your code should handle each scenario.

Enough talk, let's dive into the problems.

Interval Coverage Problem

Interval Merging Problem

Interval Intersection Problem

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