Rubyの練習 完全数をコンソール出力

gistfile1.rb

MAX = 1000

def sum(*list) 
    s = 0
    if list.size == 1 then
        return list
    end
    for val in list do
        s += val
    end
    return s
end

def getDivisors(k)
    a = [1]
#    print 1.to_s
    for x in 2...k do
        if k % x == 0 then
#            print "," + x.to_s
            a.push(x)
        end
    end
#    puts ""
    return a
end

def isPerfect? (n) 
    if n < 5 then return false end
    list = getDivisors(n) 
    s = 0
    for val in list do
        s += val
    end
#    puts n.to_s + ":" + s.to_s
    return n == s
end

counter = 0
list = []
MAX.times do |x|
    if isPerfect?(x) then 
        puts "\"" + x.to_s + "\""
        list.push(x)
        counter += 1
    end
    if x % 10 == 0 then
        puts "-----" + x.to_s
    end
end
puts "count: " + counter.to_s
puts list.join(', ')