You a have a vector with the heights of an island (at point 1, point 2 etc) and you want to know how much water would remain on this island (without flowing away)

Write a function that takes a list of words as input, and returns a list of those words bucketized by anagrams with duplicates removed. Example: Input: ["star", "rats", "car", "arc", "arts", "rats", "bar"] 
Output: [["star", "rats", "arts"], ["car", "arc"], ["bar"]] 


Given 2 interval ranges, create a function to tell me if these ranges intersect. Both start and end are inclusive: [start, end] Given 2 interval ranges that intersect, now create a function to merge the 2 ranges into a single continuous range. Now create a function that takes a group of unsorted, unorganized intervals, merge any intervals that intersect and sort them. The result should be a group of sorted, non-intersecting intervals. Now create a function to merge a new interval into a group of sorted, non-intersecting intervals. After the merge, all intervals should remain non-intersecting. You are given the function definition below.