Methods of non-overlapping/non-repetition of validation time in Java

Usage Scenario: Enter a stack of start and end date strings (or date) arrays, and enter the time period for which the array has duplicate intersections

According to the method of online reference, solve the idea: first sorting all the start and end dates, starting date and end date, according to the start date of the early-to-late, respectively stored in the order of two arrays, the next loop: from the earliest time to start, The start time of the next set of data must be later than the end of the previous set.

Specific implementation: According to the idea can be in JS or Java self-implementation

Solutions such as:

Methods of non-overlapping/non-repetition of validation time in Java