Question

How can i round in ruby only higher, and so, that 2 last numbers are null?
For exapmle

4233.000001 to 4300
52825 to 52900
627444 to 627500
111999 to 112000

?

Now i can round only in mathematic-rules via round(-2), but how to do only higher, and only with 2 null’s on the end?

Answer 1

You should use ceil

def my_round a
  (a / 100.0).ceil * 100
end

my_round 4233.000001 # => 4300
my_round 52825 # => 52900
my_round 627444 # => 627500
my_round 111999 # => 112000