This challenge has a beautiful one-liner answer.
"A hacker practices on HackerRank until getting to a rating of O(1) read as (Oh-one)"
Call the method coder.practice
until coder.oh_one?
becomes true
.
Use the until
control structure.
until
is the logical equivalent of while not
.
Hint
while not <condition>
<code>
end
or
until <condition>
<code>
end
or the beautiful one-liner
<code> until <condition>