зеркало из https://github.com/github/ruby.git
1206 строки
25 KiB
Ruby
1206 строки
25 KiB
Ruby
#!/usr/bin/env ruby
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#--
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# set.rb - defines the Set class
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#++
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# Copyright (c) 2002 Akinori MUSHA <knu@iDaemons.org>
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#
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# Documentation by Akinori MUSHA and Gavin Sinclair.
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#
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# All rights reserved. You can redistribute and/or modify it under the same
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# terms as Ruby.
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#
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# $Id$
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#
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# == Overview
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#
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# This library provides the Set class, which deals with a collection
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# of unordered values with no duplicates. It is a hybrid of Array's
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# intuitive inter-operation facilities and Hash's fast lookup. If you
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# need to keep values ordered, use the SortedSet class.
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#
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# The method +to_set+ is added to Enumerable for convenience.
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#
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# See the Set class for an example of usage.
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#
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# Set implements a collection of unordered values with no duplicates.
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# This is a hybrid of Array's intuitive inter-operation facilities and
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# Hash's fast lookup.
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#
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# Several methods accept any Enumerable object (implementing +each+)
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# for greater flexibility: new, replace, merge, subtract, |, &, -, ^.
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#
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# The equality of each couple of elements is determined according to
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# Object#eql? and Object#hash, since Set uses Hash as storage.
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#
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# Finally, if you are using class Set, you can also use Enumerable#to_set
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# for convenience.
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#
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# == Example
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#
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# require 'set'
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# s1 = Set.new [1, 2] # -> #<Set: {1, 2}>
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# s2 = [1, 2].to_set # -> #<Set: {1, 2}>
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# s1 == s2 # -> true
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# s1.add("foo") # -> #<Set: {1, 2, "foo"}>
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# s1.merge([2, 6]) # -> #<Set: {6, 1, 2, "foo"}>
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# s1.subset? s2 # -> false
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# s2.subset? s1 # -> true
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#
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class Set
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include Enumerable
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# Creates a new set containing the given objects.
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def self.[](*ary)
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new(ary)
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end
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# Creates a new set containing the elements of the given enumerable
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# object.
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#
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# If a block is given, the elements of enum are preprocessed by the
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# given block.
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def initialize(enum = nil, &block) # :yields: o
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@hash ||= Hash.new
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enum.nil? and return
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if block
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enum.each { |o| add(block[o]) }
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else
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merge(enum)
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end
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end
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# Duplicates the set.
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def dup
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myhash = @hash
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self.class.new.instance_eval {
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@hash.replace(myhash)
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self
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}
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end
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# Returns the number of elements.
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def size
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@hash.size
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end
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alias length size
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# Returns true if the set contains no elements.
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def empty?
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@hash.empty?
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end
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# Removes all elements and returns self.
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def clear
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@hash.clear
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self
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end
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# Replaces the contents of the set with the contents of the given
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# enumerable object and returns self.
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def replace(enum)
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if enum.class == self.class
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@hash.replace(enum.instance_eval { @hash })
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else
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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clear
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enum.each { |o| add(o) }
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end
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self
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end
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# Converts the set to an array. The order of elements is uncertain.
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def to_a
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@hash.keys
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end
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def flatten_merge(set, seen = Set.new)
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set.each { |e|
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if e.is_a?(Set)
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if seen.include?(e_id = e.object_id)
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raise ArgumentError, "tried to flatten recursive Set"
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end
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seen.add(e_id)
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flatten_merge(e, seen)
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seen.delete(e_id)
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else
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add(e)
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end
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}
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self
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end
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protected :flatten_merge
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# Returns a new set that is a copy of the set, flattening each
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# containing set recursively.
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def flatten
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self.class.new.flatten_merge(self)
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end
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# Equivalent to Set#flatten, but replaces the receiver with the
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# result in place. Returns nil if no modifications were made.
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def flatten!
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if detect { |e| e.is_a?(Set) }
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replace(flatten())
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else
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nil
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end
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end
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# Returns true if the set contains the given object.
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def include?(o)
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@hash.include?(o)
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end
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alias member? include?
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# Returns true if the set is a superset of the given set.
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def superset?(set)
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set.is_a?(Set) or raise ArgumentError, "value must be a set"
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return false if size < set.size
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set.all? { |o| include?(o) }
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end
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# Returns true if the set is a proper superset of the given set.
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def proper_superset?(set)
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set.is_a?(Set) or raise ArgumentError, "value must be a set"
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return false if size <= set.size
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set.all? { |o| include?(o) }
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end
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# Returns true if the set is a subset of the given set.
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def subset?(set)
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set.is_a?(Set) or raise ArgumentError, "value must be a set"
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return false if set.size < size
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all? { |o| set.include?(o) }
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end
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# Returns true if the set is a proper subset of the given set.
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def proper_subset?(set)
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set.is_a?(Set) or raise ArgumentError, "value must be a set"
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return false if set.size <= size
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all? { |o| set.include?(o) }
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end
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# Calls the given block once for each element in the set, passing
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# the element as parameter.
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def each
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@hash.each_key { |o| yield(o) }
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self
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end
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# Adds the given object to the set and returns self. Use +merge+ to
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# add several elements at once.
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def add(o)
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@hash[o] = true
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self
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end
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alias << add
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# Adds the given object to the set and returns self. If the
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# object is already in the set, returns nil.
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def add?(o)
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if include?(o)
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nil
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else
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add(o)
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end
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end
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# Deletes the given object from the set and returns self. Use +subtract+ to
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# delete several items at once.
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def delete(o)
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@hash.delete(o)
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self
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end
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# Deletes the given object from the set and returns self. If the
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# object is not in the set, returns nil.
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def delete?(o)
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if include?(o)
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delete(o)
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else
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nil
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end
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end
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# Deletes every element of the set for which block evaluates to
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# true, and returns self.
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def delete_if
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@hash.delete_if { |o,| yield(o) }
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self
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end
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# Do collect() destructively.
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def collect!
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set = self.class.new
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each { |o| set << yield(o) }
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replace(set)
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end
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alias map! collect!
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# Equivalent to Set#delete_if, but returns nil if no changes were
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# made.
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def reject!
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n = size
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delete_if { |o| yield(o) }
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size == n ? nil : self
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end
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# Merges the elements of the given enumerable object to the set and
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# returns self.
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def merge(enum)
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if enum.class == self.class
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@hash.update(enum.instance_eval { @hash })
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else
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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enum.each { |o| add(o) }
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end
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self
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end
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# Deletes every element that appears in the given enumerable object
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# and returns self.
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def subtract(enum)
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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enum.each { |o| delete(o) }
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self
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end
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# Returns a new set built by merging the set and the elements of the
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# given enumerable object.
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def |(enum)
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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dup.merge(enum)
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end
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alias + | ##
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alias union | ##
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# Returns a new set built by duplicating the set, removing every
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# element that appears in the given enumerable object.
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def -(enum)
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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dup.subtract(enum)
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end
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alias difference - ##
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# Returns a new array containing elements common to the set and the
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# given enumerable object.
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def &(enum)
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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n = self.class.new
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enum.each { |o| include?(o) and n.add(o) }
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n
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end
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alias intersection & ##
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# Returns a new array containing elements exclusive between the set
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# and the given enumerable object. (set ^ enum) is equivalent to
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# ((set | enum) - (set & enum)).
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def ^(enum)
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enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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n = dup
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enum.each { |o| if n.include?(o) then n.delete(o) else n.add(o) end }
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n
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end
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# Returns true if two sets are equal. The equality of each couple
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# of elements is defined according to Object#eql?.
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def ==(set)
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equal?(set) and return true
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set.is_a?(Set) && size == set.size or return false
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set.all? { |o| include?(o) }
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end
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def hash # :nodoc:
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@hash.hash
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end
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def eql?(o) # :nodoc:
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@hash.hash == o.hash
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end
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# Classifies the set by the return value of the given block and
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# returns a hash of {value => set of elements} pairs. The block is
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# called once for each element of the set, passing the element as
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# parameter.
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#
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# e.g.:
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#
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# require 'set'
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# files = Set.new(Dir.glob("*.rb"))
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# hash = files.classify { |f| File.mtime(f).year }
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# p hash # => {2000=>#<Set: {"a.rb", "b.rb"}>,
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# # 2001=>#<Set: {"c.rb", "d.rb", "e.rb"}>,
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# # 2002=>#<Set: {"f.rb"}>}
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def classify # :yields: o
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h = {}
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each { |i|
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x = yield(i)
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(h[x] ||= self.class.new).add(i)
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}
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h
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end
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# Divides the set into a set of subsets according to the commonality
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# defined by the given block.
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#
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# If the arity of the block is 2, elements o1 and o2 are in common
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# if block.call(o1, o2) is true. Otherwise, elements o1 and o2 are
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# in common if block.call(o1) == block.call(o2).
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#
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# e.g.:
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#
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# require 'set'
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# numbers = Set[1, 3, 4, 6, 9, 10, 11]
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# set = numbers.divide { |i,j| (i - j).abs == 1 }
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# p set # => #<Set: {#<Set: {1}>,
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# # #<Set: {11, 9, 10}>,
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# # #<Set: {3, 4}>,
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# # #<Set: {6}>}>
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def divide(&func)
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if func.arity == 2
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require 'tsort'
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class << dig = {} # :nodoc:
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include TSort
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alias tsort_each_node each_key
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def tsort_each_child(node, &block)
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fetch(node).each(&block)
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end
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end
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each { |u|
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dig[u] = a = []
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each{ |v| func.call(u, v) and a << v }
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}
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set = Set.new()
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dig.each_strongly_connected_component { |css|
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set.add(self.class.new(css))
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}
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set
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else
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Set.new(classify(&func).values)
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end
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end
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InspectKey = :__inspect_key__ # :nodoc:
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# Returns a string containing a human-readable representation of the
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# set. ("#<Set: {element1, element2, ...}>")
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def inspect
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ids = (Thread.current[InspectKey] ||= [])
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if ids.include?(object_id)
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return sprintf('#<%s: {...}>', self.class.name)
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end
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begin
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ids << object_id
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return sprintf('#<%s: {%s}>', self.class, to_a.inspect[1..-2])
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ensure
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ids.pop
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end
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end
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def pretty_print(pp) # :nodoc:
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pp.text sprintf('#<%s: {', self.class.name)
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pp.nest(1) {
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pp.seplist(self) { |o|
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pp.pp o
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}
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}
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pp.text "}>"
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end
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def pretty_print_cycle(pp) # :nodoc:
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pp.text sprintf('#<%s: {%s}>', self.class.name, empty? ? '' : '...')
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end
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end
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# SortedSet implements a set which elements are sorted in order. See Set.
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class SortedSet < Set
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@@setup = false
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class << self
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def [](*ary) # :nodoc:
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new(ary)
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end
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def setup # :nodoc:
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@@setup and return
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begin
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require 'rbtree'
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module_eval %{
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def initialize(*args, &block)
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@hash = RBTree.new
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super
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end
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}
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rescue LoadError
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module_eval %{
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def initialize(*args, &block)
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@keys = nil
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super
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end
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def clear
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@keys = nil
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super
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end
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def replace(enum)
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@keys = nil
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super
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end
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def add(o)
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@keys = nil
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@hash[o] = true
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self
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end
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alias << add
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def delete(o)
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@keys = nil
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@hash.delete(o)
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self
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end
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def delete_if
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n = @hash.size
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@hash.delete_if { |o,| yield(o) }
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@keys = nil if @hash.size != n
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self
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end
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def merge(enum)
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@keys = nil
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super
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end
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def each
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to_a.each { |o| yield(o) }
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end
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def to_a
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(@keys = @hash.keys).sort! unless @keys
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@keys
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end
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}
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end
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@@setup = true
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end
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end
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def initialize(*args, &block) # :nodoc:
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SortedSet.setup
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initialize(*args, &block)
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end
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end
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module Enumerable
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# Makes a set from the enumerable object with given arguments.
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def to_set(klass = Set, *args, &block)
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klass.new(self, *args, &block)
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end
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end
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# =begin
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# == RestricedSet class
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# RestricedSet implements a set with restrictions defined by a given
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# block.
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#
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# === Super class
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# Set
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#
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# === Class Methods
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# --- RestricedSet::new(enum = nil) { |o| ... }
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# --- RestricedSet::new(enum = nil) { |rset, o| ... }
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# Creates a new restricted set containing the elements of the given
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# enumerable object. Restrictions are defined by the given block.
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#
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# If the block's arity is 2, it is called with the RestrictedSet
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# itself and an object to see if the object is allowed to be put in
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# the set.
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#
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# Otherwise, the block is called with an object to see if the object
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# is allowed to be put in the set.
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#
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# === Instance Methods
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# --- restriction_proc
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# Returns the restriction procedure of the set.
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#
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# =end
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#
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# class RestricedSet < Set
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# def initialize(*args, &block)
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# @proc = block or raise ArgumentError, "missing a block"
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#
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# if @proc.arity == 2
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# instance_eval %{
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# def add(o)
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# @hash[o] = true if @proc.call(self, o)
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# self
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# end
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# alias << add
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#
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# def add?(o)
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# if include?(o) || !@proc.call(self, o)
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# nil
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# else
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# @hash[o] = true
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# self
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# end
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# end
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#
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# def replace(enum)
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# enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
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# clear
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# enum.each { |o| add(o) }
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#
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# self
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# end
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#
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# def merge(enum)
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# enum.is_a?(Enumerable) or raise ArgumentError, "value must be enumerable"
|
|
# enum.each { |o| add(o) }
|
|
#
|
|
# self
|
|
# end
|
|
# }
|
|
# else
|
|
# instance_eval %{
|
|
# def add(o)
|
|
# @hash[o] = true if @proc.call(o)
|
|
# self
|
|
# end
|
|
# alias << add
|
|
#
|
|
# def add?(o)
|
|
# if include?(o) || !@proc.call(o)
|
|
# nil
|
|
# else
|
|
# @hash[o] = true
|
|
# self
|
|
# end
|
|
# end
|
|
# }
|
|
# end
|
|
#
|
|
# super(*args)
|
|
# end
|
|
#
|
|
# def restriction_proc
|
|
# @proc
|
|
# end
|
|
# end
|
|
|
|
if $0 == __FILE__
|
|
eval DATA.read, nil, $0, __LINE__+4
|
|
end
|
|
|
|
__END__
|
|
|
|
require 'test/unit'
|
|
|
|
class TC_Set < Test::Unit::TestCase
|
|
def test_aref
|
|
assert_nothing_raised {
|
|
Set[]
|
|
Set[nil]
|
|
Set[1,2,3]
|
|
}
|
|
|
|
assert_equal(0, Set[].size)
|
|
assert_equal(1, Set[nil].size)
|
|
assert_equal(1, Set[[]].size)
|
|
assert_equal(1, Set[[nil]].size)
|
|
|
|
set = Set[2,4,6,4]
|
|
assert_equal(Set.new([2,4,6]), set)
|
|
end
|
|
|
|
def test_s_new
|
|
assert_nothing_raised {
|
|
Set.new()
|
|
Set.new(nil)
|
|
Set.new([])
|
|
Set.new([1,2])
|
|
Set.new('a'..'c')
|
|
Set.new('XYZ')
|
|
}
|
|
assert_raises(ArgumentError) {
|
|
Set.new(false)
|
|
}
|
|
assert_raises(ArgumentError) {
|
|
Set.new(1)
|
|
}
|
|
assert_raises(ArgumentError) {
|
|
Set.new(1,2)
|
|
}
|
|
|
|
assert_equal(0, Set.new().size)
|
|
assert_equal(0, Set.new(nil).size)
|
|
assert_equal(0, Set.new([]).size)
|
|
assert_equal(1, Set.new([nil]).size)
|
|
|
|
ary = [2,4,6,4]
|
|
set = Set.new(ary)
|
|
ary.clear
|
|
assert_equal(false, set.empty?)
|
|
assert_equal(3, set.size)
|
|
|
|
ary = [1,2,3]
|
|
|
|
s = Set.new(ary) { |o| o * 2 }
|
|
assert_equal([2,4,6], s.sort)
|
|
end
|
|
|
|
def test_dup
|
|
set1 = Set[1,2]
|
|
set2 = set1.dup
|
|
|
|
assert_not_same(set1, set2)
|
|
|
|
assert_equal(set1, set2)
|
|
|
|
set1.add(3)
|
|
|
|
assert_not_equal(set1, set2)
|
|
end
|
|
|
|
def test_size
|
|
assert_equal(0, Set[].size)
|
|
assert_equal(2, Set[1,2].size)
|
|
assert_equal(2, Set[1,2,1].size)
|
|
end
|
|
|
|
def test_empty?
|
|
assert_equal(true, Set[].empty?)
|
|
assert_equal(false, Set[1, 2].empty?)
|
|
end
|
|
|
|
def test_clear
|
|
set = Set[1,2]
|
|
ret = set.clear
|
|
|
|
assert_same(set, ret)
|
|
assert_equal(true, set.empty?)
|
|
end
|
|
|
|
def test_replace
|
|
set = Set[1,2]
|
|
ret = set.replace('a'..'c')
|
|
|
|
assert_same(set, ret)
|
|
assert_equal(Set['a','b','c'], set)
|
|
end
|
|
|
|
def test_to_a
|
|
set = Set[1,2,3,2]
|
|
ary = set.to_a
|
|
|
|
assert_equal([1,2,3], ary.sort)
|
|
end
|
|
|
|
def test_flatten
|
|
# test1
|
|
set1 = Set[
|
|
1,
|
|
Set[
|
|
5,
|
|
Set[7,
|
|
Set[0]
|
|
],
|
|
Set[6,2],
|
|
1
|
|
],
|
|
3,
|
|
Set[3,4]
|
|
]
|
|
|
|
set2 = set1.flatten
|
|
set3 = Set.new(0..7)
|
|
|
|
assert_not_same(set2, set1)
|
|
assert_equal(set3, set2)
|
|
|
|
# test2; destructive
|
|
orig_set1 = set1
|
|
set1.flatten!
|
|
|
|
assert_same(orig_set1, set1)
|
|
assert_equal(set3, set1)
|
|
|
|
# test3; multiple occurences of a set in an set
|
|
set1 = Set[1, 2]
|
|
set2 = Set[set1, Set[set1, 4], 3]
|
|
|
|
assert_nothing_raised {
|
|
set2.flatten!
|
|
}
|
|
|
|
assert_equal(Set.new(1..4), set2)
|
|
|
|
# test4; recursion
|
|
set2 = Set[]
|
|
set1 = Set[1, set2]
|
|
set2.add(set1)
|
|
|
|
assert_raises(ArgumentError) {
|
|
set1.flatten!
|
|
}
|
|
|
|
# test5; miscellaneus
|
|
empty = Set[]
|
|
set = Set[Set[empty, "a"],Set[empty, "b"]]
|
|
|
|
assert_nothing_raised {
|
|
set.flatten
|
|
}
|
|
|
|
set1 = empty.merge(Set["no_more", set])
|
|
|
|
assert_nil(Set.new(0..31).flatten!)
|
|
|
|
x = Set[Set[],Set[1,2]].flatten!
|
|
y = Set[1,2]
|
|
|
|
assert_equal(x, y)
|
|
end
|
|
|
|
def test_include?
|
|
set = Set[1,2,3]
|
|
|
|
assert_equal(true, set.include?(1))
|
|
assert_equal(true, set.include?(2))
|
|
assert_equal(true, set.include?(3))
|
|
assert_equal(false, set.include?(0))
|
|
assert_equal(false, set.include?(nil))
|
|
|
|
set = Set["1",nil,"2",nil,"0","1",false]
|
|
assert_equal(true, set.include?(nil))
|
|
assert_equal(true, set.include?(false))
|
|
assert_equal(true, set.include?("1"))
|
|
assert_equal(false, set.include?(0))
|
|
assert_equal(false, set.include?(true))
|
|
end
|
|
|
|
def test_superset?
|
|
set = Set[1,2,3]
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.superset?()
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.superset?(2)
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.superset?([2])
|
|
}
|
|
|
|
assert_equal(true, set.superset?(Set[]))
|
|
assert_equal(true, set.superset?(Set[1,2]))
|
|
assert_equal(true, set.superset?(Set[1,2,3]))
|
|
assert_equal(false, set.superset?(Set[1,2,3,4]))
|
|
assert_equal(false, set.superset?(Set[1,4]))
|
|
|
|
assert_equal(true, Set[].superset?(Set[]))
|
|
end
|
|
|
|
def test_proper_superset?
|
|
set = Set[1,2,3]
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.proper_superset?()
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.proper_superset?(2)
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.proper_superset?([2])
|
|
}
|
|
|
|
assert_equal(true, set.proper_superset?(Set[]))
|
|
assert_equal(true, set.proper_superset?(Set[1,2]))
|
|
assert_equal(false, set.proper_superset?(Set[1,2,3]))
|
|
assert_equal(false, set.proper_superset?(Set[1,2,3,4]))
|
|
assert_equal(false, set.proper_superset?(Set[1,4]))
|
|
|
|
assert_equal(false, Set[].proper_superset?(Set[]))
|
|
end
|
|
|
|
def test_subset?
|
|
set = Set[1,2,3]
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.subset?()
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.subset?(2)
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.subset?([2])
|
|
}
|
|
|
|
assert_equal(true, set.subset?(Set[1,2,3,4]))
|
|
assert_equal(true, set.subset?(Set[1,2,3]))
|
|
assert_equal(false, set.subset?(Set[1,2]))
|
|
assert_equal(false, set.subset?(Set[]))
|
|
|
|
assert_equal(true, Set[].subset?(Set[1]))
|
|
assert_equal(true, Set[].subset?(Set[]))
|
|
end
|
|
|
|
def test_proper_subset?
|
|
set = Set[1,2,3]
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.proper_subset?()
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.proper_subset?(2)
|
|
}
|
|
|
|
assert_raises(ArgumentError) {
|
|
set.proper_subset?([2])
|
|
}
|
|
|
|
assert_equal(true, set.proper_subset?(Set[1,2,3,4]))
|
|
assert_equal(false, set.proper_subset?(Set[1,2,3]))
|
|
assert_equal(false, set.proper_subset?(Set[1,2]))
|
|
assert_equal(false, set.proper_subset?(Set[]))
|
|
|
|
assert_equal(false, Set[].proper_subset?(Set[]))
|
|
end
|
|
|
|
def test_each
|
|
ary = [1,3,5,7,10,20]
|
|
set = Set.new(ary)
|
|
|
|
assert_raises(LocalJumpError) {
|
|
set.each
|
|
}
|
|
|
|
assert_nothing_raised {
|
|
set.each { |o|
|
|
ary.delete(o) or raise "unexpected element: #{o}"
|
|
}
|
|
|
|
ary.empty? or raise "forgotten elements: #{ary.join(', ')}"
|
|
}
|
|
end
|
|
|
|
def test_add
|
|
set = Set[1,2,3]
|
|
|
|
ret = set.add(2)
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,3], set)
|
|
|
|
ret = set.add?(2)
|
|
assert_nil(ret)
|
|
assert_equal(Set[1,2,3], set)
|
|
|
|
ret = set.add(4)
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,3,4], set)
|
|
|
|
ret = set.add?(5)
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,3,4,5], set)
|
|
end
|
|
|
|
def test_delete
|
|
set = Set[1,2,3]
|
|
|
|
ret = set.delete(4)
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,3], set)
|
|
|
|
ret = set.delete?(4)
|
|
assert_nil(ret)
|
|
assert_equal(Set[1,2,3], set)
|
|
|
|
ret = set.delete(2)
|
|
assert_equal(set, ret)
|
|
assert_equal(Set[1,3], set)
|
|
|
|
ret = set.delete?(1)
|
|
assert_equal(set, ret)
|
|
assert_equal(Set[3], set)
|
|
end
|
|
|
|
def test_delete_if
|
|
set = Set.new(1..10)
|
|
ret = set.delete_if { |i| i > 10 }
|
|
assert_same(set, ret)
|
|
assert_equal(Set.new(1..10), set)
|
|
|
|
set = Set.new(1..10)
|
|
ret = set.delete_if { |i| i % 3 == 0 }
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,4,5,7,8,10], set)
|
|
end
|
|
|
|
def test_collect!
|
|
set = Set[1,2,3,'a','b','c',-1..1,2..4]
|
|
|
|
ret = set.collect! { |i|
|
|
case i
|
|
when Numeric
|
|
i * 2
|
|
when String
|
|
i.upcase
|
|
else
|
|
nil
|
|
end
|
|
}
|
|
|
|
assert_same(set, ret)
|
|
assert_equal(Set[2,4,6,'A','B','C',nil], set)
|
|
end
|
|
|
|
def test_reject!
|
|
set = Set.new(1..10)
|
|
|
|
ret = set.reject! { |i| i > 10 }
|
|
assert_nil(ret)
|
|
assert_equal(Set.new(1..10), set)
|
|
|
|
ret = set.reject! { |i| i % 3 == 0 }
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,4,5,7,8,10], set)
|
|
end
|
|
|
|
def test_merge
|
|
set = Set[1,2,3]
|
|
|
|
ret = set.merge([2,4,6])
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,2,3,4,6], set)
|
|
end
|
|
|
|
def test_subtract
|
|
set = Set[1,2,3]
|
|
|
|
ret = set.subtract([2,4,6])
|
|
assert_same(set, ret)
|
|
assert_equal(Set[1,3], set)
|
|
end
|
|
|
|
def test_plus
|
|
set = Set[1,2,3]
|
|
|
|
ret = set + [2,4,6]
|
|
assert_not_same(set, ret)
|
|
assert_equal(Set[1,2,3,4,6], ret)
|
|
end
|
|
|
|
def test_minus
|
|
set = Set[1,2,3]
|
|
|
|
ret = set - [2,4,6]
|
|
assert_not_same(set, ret)
|
|
assert_equal(Set[1,3], ret)
|
|
end
|
|
|
|
def test_and
|
|
set = Set[1,2,3,4]
|
|
|
|
ret = set & [2,4,6]
|
|
assert_not_same(set, ret)
|
|
assert_equal(Set[2,4], ret)
|
|
end
|
|
|
|
def test_eq
|
|
set1 = Set[2,3,1]
|
|
set2 = Set[1,2,3]
|
|
|
|
assert_equal(set1, set1)
|
|
assert_equal(set1, set2)
|
|
assert_not_equal(Set[1], [1])
|
|
|
|
set1 = Class.new(Set)["a", "b"]
|
|
set2 = Set["a", "b", set1]
|
|
set1 = set1.add(set1.clone)
|
|
|
|
assert_equal(set1, set2)
|
|
assert_equal(set2, set1)
|
|
assert_equal(set2, set2.clone)
|
|
assert_equal(set1.clone, set1)
|
|
end
|
|
|
|
# def test_hash
|
|
# end
|
|
|
|
# def test_eql?
|
|
# end
|
|
|
|
def test_classify
|
|
set = Set.new(1..10)
|
|
ret = set.classify { |i| i % 3 }
|
|
|
|
assert_equal(3, ret.size)
|
|
assert_instance_of(Hash, ret)
|
|
ret.each_value { |value| assert_instance_of(Set, value) }
|
|
assert_equal(Set[3,6,9], ret[0])
|
|
assert_equal(Set[1,4,7,10], ret[1])
|
|
assert_equal(Set[2,5,8], ret[2])
|
|
end
|
|
|
|
def test_divide
|
|
set = Set.new(1..10)
|
|
ret = set.divide { |i| i % 3 }
|
|
|
|
assert_equal(3, ret.size)
|
|
n = 0
|
|
ret.each { |s| n += s.size }
|
|
assert_equal(set.size, n)
|
|
assert_equal(set, ret.flatten)
|
|
|
|
set = Set[7,10,5,11,1,3,4,9,0]
|
|
ret = set.divide { |a,b| (a - b).abs == 1 }
|
|
|
|
assert_equal(4, ret.size)
|
|
n = 0
|
|
ret.each { |s| n += s.size }
|
|
assert_equal(set.size, n)
|
|
assert_equal(set, ret.flatten)
|
|
ret.each { |s|
|
|
if s.include?(0)
|
|
assert_equal(Set[0,1], s)
|
|
elsif s.include?(3)
|
|
assert_equal(Set[3,4,5], s)
|
|
elsif s.include?(7)
|
|
assert_equal(Set[7], s)
|
|
elsif s.include?(9)
|
|
assert_equal(Set[9,10,11], s)
|
|
else
|
|
raise "unexpected group: #{s.inspect}"
|
|
end
|
|
}
|
|
end
|
|
|
|
def test_inspect
|
|
set1 = Set[1]
|
|
|
|
assert_equal('#<Set: {1}>', set1.inspect)
|
|
|
|
set2 = Set[Set[0], 1, 2, set1]
|
|
assert_equal(false, set2.inspect.include?('#<Set: {...}>'))
|
|
|
|
set1.add(set2)
|
|
assert_equal(true, set1.inspect.include?('#<Set: {...}>'))
|
|
end
|
|
|
|
# def test_pretty_print
|
|
# end
|
|
|
|
# def test_pretty_print_cycle
|
|
# end
|
|
end
|
|
|
|
class TC_SortedSet < Test::Unit::TestCase
|
|
def test_sortedset
|
|
s = SortedSet[4,5,3,1,2]
|
|
|
|
assert_equal([1,2,3,4,5], s.to_a)
|
|
|
|
prev = nil
|
|
s.each { |o| assert(prev < o) if prev; prev = o }
|
|
assert_not_nil(prev)
|
|
|
|
s.map! { |o| -2 * o }
|
|
|
|
assert_equal([-10,-8,-6,-4,-2], s.to_a)
|
|
|
|
prev = nil
|
|
s.each { |o| assert(prev < o) if prev; prev = o }
|
|
assert_not_nil(prev)
|
|
|
|
s = SortedSet.new([2,1,3]) { |o| o * -2 }
|
|
assert_equal([-6,-4,-2], s.to_a)
|
|
end
|
|
end
|
|
|
|
class TC_Enumerable < Test::Unit::TestCase
|
|
def test_to_set
|
|
ary = [2,5,4,3,2,1,3]
|
|
|
|
set = ary.to_set
|
|
assert_instance_of(Set, set)
|
|
assert_equal([1,2,3,4,5], set.sort)
|
|
|
|
set = ary.to_set { |o| o * -2 }
|
|
assert_instance_of(Set, set)
|
|
assert_equal([-10,-8,-6,-4,-2], set.sort)
|
|
|
|
set = ary.to_set(SortedSet)
|
|
assert_instance_of(SortedSet, set)
|
|
assert_equal([1,2,3,4,5], set.to_a)
|
|
|
|
set = ary.to_set(SortedSet) { |o| o * -2 }
|
|
assert_instance_of(SortedSet, set)
|
|
assert_equal([-10,-8,-6,-4,-2], set.sort)
|
|
end
|
|
end
|
|
|
|
# class TC_RestricedSet < Test::Unit::TestCase
|
|
# def test_s_new
|
|
# assert_raises(ArgumentError) { RestricedSet.new }
|
|
#
|
|
# s = RestricedSet.new([-1,2,3]) { |o| o > 0 }
|
|
# assert_equal([2,3], s.sort)
|
|
# end
|
|
#
|
|
# def test_restriction_proc
|
|
# s = RestricedSet.new([-1,2,3]) { |o| o > 0 }
|
|
#
|
|
# f = s.restriction_proc
|
|
# assert_instance_of(Proc, f)
|
|
# assert(f[1])
|
|
# assert(!f[0])
|
|
# end
|
|
#
|
|
# def test_replace
|
|
# s = RestricedSet.new(-3..3) { |o| o > 0 }
|
|
# assert_equal([1,2,3], s.sort)
|
|
#
|
|
# s.replace([-2,0,3,4,5])
|
|
# assert_equal([3,4,5], s.sort)
|
|
# end
|
|
#
|
|
# def test_merge
|
|
# s = RestricedSet.new { |o| o > 0 }
|
|
# s.merge(-5..5)
|
|
# assert_equal([1,2,3,4,5], s.sort)
|
|
#
|
|
# s.merge([10,-10,-8,8])
|
|
# assert_equal([1,2,3,4,5,8,10], s.sort)
|
|
# end
|
|
# end
|