Lintcode30 Insert Interval solution 题解

题目描述】

Given a non-overlapping interval list which is sorted by start point.Insert a new interval into it, make sure the list is still in order and non-overlapping (merge intervals if necessary).

给出一个无重叠的按照区间起始端点排序的区间列表。在列表中插入一个新的区间，你要确保列表中的区间仍然有序且不重叠（如果有必要的话，可以合并区间）。

【题目链接】

http://www.lintcode.com/en/problem/insert-interval/

【题目解析】

用pos记录newInterval应该插入的位置。顺序遍历intervals中的元素，若当前interval的end比newInterval的start还小，则将当前interval加入答案，同时pos＋1；若比newInterval大，则直接加入答案；若有overlap，则需要merge，newInterval的start取两者间小的，end取两者间大的。最后在pos的位置插入newInterval即可。

【参考答案】

http://www.jiuzhang.com/solutions/insert-interval/

时间： 2024-10-01 13:41:38

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