Sha256: 8231b8e2fde4bebeed792de876d5920790c5c74c47704799b0c57b4111e0d4b1
Contents?: true
Size: 671 Bytes
Versions: 157
Compression:
Stored size: 671 Bytes
Contents
module BookKeeping
VERSION = 2
end
class RunLengthEncoding
def self.encode(str)
str.chars.chunk { |char| char }.each_with_object('') do |chunk, out|
out << encoded(chunk)
end
end
def self.decode(str)
str.scan(/(\d+)?(\D)/).each_with_object('') do |captures, out|
out << decoded(captures)
end
end
# private
def self.encoded(chunk)
char = chunk.first
times = chunk.last.count
return char if times == 1
"#{times}#{char}"
end
private_class_method :encoded
def self.decoded(captures)
times = (captures.first || 1).to_i
char = captures.last
char * times
end
private_class_method :decoded
end
Version data entries
157 entries across 157 versions & 1 rubygems