CS计算机代考程序代写 class PhoneBook
class PhoneBook
def initialize
end
def add(name, number, is_listed)
raise Exception, “Not implemented”
end
def lookup(name)
raise Exception, “Not implemented”
end
def lookupByNum(number)
raise Exception, “Not implemented”
end
def namesByAc(areacode)
raise Exception, “Not implemented”
end
end