Improve search by ID performace

[anshumanv]

We are iterating over each object to match it's num, this is poor in terms if performance, please improve it.

• [x] I ensure that this issue is not a duplicate of any current open issues(s).
• [ ] Assign this issue to me (I want to work on this).
• [ ] I will send my PR only after I'm assigned to this issue by any maintainer.
• [ ] I understand that I will be unassigned from this issue if I fail to send a PR for this within a week.

[sneakycrowllc]

What is a different way it could be done?

[Monal5031]

Well we can map the values to object and then do a BST over the numbers and retrieve back the chain we need.

[dericcain]

I gave this a shot in #46. This was a really good case for using a lookup table.