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Title from: https://twitter.com/nadavrot/status/697333319847915520

A small change to the hashing function has a huge impact on the shape of the binary tree. Good hash -> wide tree.

The visualizations of the tree really drove it home.

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    Should of used a red black tree! It remains balanced.

    https://en.wikipedia.org/wiki/Red%E2%80%93black_tree