Class: Classbench::Tier

Inherits:
Object
  • Object
show all
Defined in:
lib/classbench/tier.rb

Overview

Class for representation of a n-ary prefix tree - trie.

Instance Attribute Summary collapse

Instance Method Summary collapse

Instance Attribute Details

#root ⇒ Object

Returns the value of attribute root.



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# File 'lib/classbench/tier.rb', line 5

def root
  @root
end

Instance Method Details

#get_stats ⇒ Object

Erase not implemented/neccessary



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# File 'lib/classbench/tier.rb', line 36

def get_stats
	return if not root

	root.compute_weights
end

#insert(prefix) ⇒ Object 



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# File 'lib/classbench/tier.rb', line 7

def insert(prefix)
	self.root = TierNode.new(0) if not root

	# Empty prefix
	if prefix.size == 0
		root.increment_prefixes
		return
	end

	current_node = self.root
	next_node = nil

	# For each char
	prefix.split('').each_with_index do |ch, i|
		next_node = current_node.subtree[ch]

		if next_node.nil?
			next_node = TierNode.new(i+1)
			current_node.subtree[ch] = next_node
		end

		current_node = next_node
	end

	current_node.increment_prefixes
end