https://leetcode.com/problems/summary-ranges/discuss/913396/Simple-C%2B%2B-solution-video-explanation
https://leetcode.com/problems/summary-ranges/
Solution for leetcode problem 228, Summary Ranges
Solution by intuition
Leetcode problems and solutions
Leetcode daily challenge
Leetcode October Challenge
Time complexity of O(N)
Space complexity of O(N)
