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Editorial Team
Asked: May 11, 20262026-05-11T19:40:15+00:00 2026-05-11T19:40:15+00:00

Without using extensions methods (LINQ). I am restricted to .NET 2.0 unfortunately. (Yeah, it

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Without using extensions methods (LINQ). I am restricted to .NET 2.0 unfortunately. (Yeah, it sucks)

Looking for something close to O(log(n)).

Thanks for your help.

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    Editorial Team
    2026-05-11T19:40:15+00:00Added an answer on May 11, 2026 at 7:40 pm

    To find the first key that is greater than a given key you could use the list of keys SortedList<T>.Keys and perform a Binary Search or Interpolation Search on the keys. This will yield O(log(n)) (MSDN states that a key look up is O(1)).

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