https://leetcode.com/problems/asteroid-collision/\nhttps://leetcode.com/problems/number-of-islands/\nhttps://leetcode.com/problems/minimum-knight-moves/\nhttps://leetcode.com/problems/max-chunks-to-make-sorted-ii/\nhttps://leetcode.com/problems/course-schedule-ii/\nhttps://leetcode.com/problems/trapping-rain-water/\nhttps://leetcode.com/problems/remove-all-adjacent-duplicates-in-string-ii/

https://leetcode.com/problems/asteroid-collision/\nhttps://leetcode.com/problems/number-of-islands/\nhttps://leetcode.com/problems/minimum-knight-moves/\nhttps: