Sha256: f7a6fa0685a5b9ad8dfa66afa401180462dc8e161bc73432094561e15b334c96
Contents?: true
Size: 1.02 KB
Versions: 8
Compression:
Stored size: 1.02 KB
Contents
# -*- coding: utf-8 -*-
class Array
unless method_defined? :shuffle
# Randomly arrange the array items.
#
# @return [Array] a new array with the items shuffled.
#
# This implementation is optimized for speed, not for memory use.
# See http://codeidol.com/other/rubyckbk/Arrays/Shuffling-an-Array/
#
# @example
# list=
# list=['a','b','c']
# list.shuffle!
# list => ['c','a','b']
def shuffle
dup.shuffle!
end
end
unless method_defined? :shuffle!
# Randomly arrange the array items.
#
# @return [Array] the array, with its items shuffled.
#
# This implementation is optimized for speed, not for memory use.
# See http://codeidol.com/other/rubyckbk/Arrays/Shuffling-an-Array/
#
# @example
# list=
# list=['a','b','c']
# list.shuffle!
# list => ['c','a','b']
def shuffle!
each_index do |i|
j = rand(length-i) + i
self[j], self[i] = self[i], self[j]
end
end
end
end
Version data entries
8 entries across 8 versions & 1 rubygems