bit manipulation - Complexity of search operation on a nedtrie (bitwise trie) -


i heard nedtries , decided try implementing them, bothers me complexity of search operation; can't stand why supposed fast.

from understood, expected complexity of search operation should o(m/2) m size of key in bits. if compare complexity of search operation in traditional binary tree, get: log2(n) >= m/2

let's key 32bits long: log2(n) >= 16 <=> n >= 65536

so nedtries should faster binary trees starting 65536 items. however, author claim faster binary tree, either assumption on complexity wrong or computations performed @ each step of search vastly faster in nedtrie.

so, it?

if have smaller trees, can use smaller keys!


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