14 lines
342 B
Text
14 lines
342 B
Text
def happy?(n)
|
|
past = [] of Int32 | Int64
|
|
until n == 1
|
|
sum = 0; while n > 0; sum += (n % 10) ** 2; n //= 10 end
|
|
return false if past.includes? (n = sum)
|
|
past << n
|
|
end
|
|
true
|
|
end
|
|
|
|
i = count = 0
|
|
until count == 8; (puts i; count += 1) if happy?(i += 1) end
|
|
puts
|
|
(99999999999900..99999999999999).each { |i| puts i if happy?(i) }
|