ruby - How to decompose an integer into a array of integers -

lets have number of "things", instance 7.

but can store "things" in groups of maximum "2" units. need this:

7  ---->  [2, 2, 2, 1] 

the obvious method if make loop through it

def decompose(qty, group_max)     ret = []      while qty > 0         if qty < group_max             ret.push qty             qty = 0         else             ret.push group_max             qty -= group_max         end     end      ret  end  decompose 7, 2 

while works... not ellegant. wondering if maybe there method in integer or array structure can use improve code.

i find cleaner things like

myarray.map {|x| ... } 

and wondering if there similar might me this.

you can as:

 qty = 15    #  group_size = 2  count_of_groups = qty / group_size  result = [group_size] * count_of_groups  remaining = qty % group_size  result += [remaining] if remaining != 0  result     # [2, 2, 2, 2, 2, 2, 2, 1]