Merging intervals in next-gen C++--Marco Arena

Revisiting a classical programming puzzle in next generation C++:

Merging intervals in next-gen C++

by Marco Arena

From the article:

A few weeks ago, I set this problem at Coding Gym: given an array of intervals where intervals[i] = [starti, endi], merge all overlapping intervals, and return an array of the non-overlapping intervals that cover all the intervals in the input...