How to find point between two keys in sorted dictionary

Question

I have a sorted dictionary that contains measured data points as key/value pairs. To determine the value for a non-measured data point I want to extrapolate the value between t

Answer 1

The standard C# answers are all O(N) complexity. Sometimes you just need a small subset in a rather large sorted collection. (so you're not iterating all the keys) The standard C# collections won't help you here. And a solution is as followed: http://www.itu.dk/research/c5/ Use the IntervalHeap in the C5 collections library. This class supports a GetRange() method and will lookup the startkey with O(log N) complexity and iterate the range with O(N) complexity. Which will be definately useful for big datasets if performance is critical. e.g. Spatial Partitioning in gaming