Neetcode: Insert Interval

Instructions

You are given an array of non-overlapping intervals intervals where intervals[i] = [start_i, end_i] represents the start and the end time of the ith interval. intervals is initially sorted in ascending order by start_i.

You are given another interval newInterval = [start, end].

Insert newInterval into intervals such that intervals is still sorted in ascending order by start_i and also intervals still does not have any overlapping intervals. You may merge the overlapping intervals if needed.

Return intervals after adding newInterval.

Note: Intervals are non-overlapping if they have no common point. For example, [1,2] and [3,4] are non-overlapping, but [1,2] and [2,3] are overlapping.

Example 1:

Input: intervals = [[1,3],[4,6]], newInterval = [2,5]

Output: [[1,6]]

Example 2:

Input: intervals = [[1,2],[3,5],[9,10]], newInterval = [6,7]

Output: [[1,2],[3,5],[6,7],[9,10]]

Constraints:

• 0 <= intervals.length <= 1000
• newInterval.length == intervals[i].length == 2
• 0 <= start <= end <= 1000