Re: [Pharo-users] little "challenge"

The first thing I found: #(16 17 17 16 18 17 18 19 19 19 18 19 19 20 19 20 19 20 20 20 19 20) groupsOf: 7 atATimeCollect: [ :x | x ] "#(#(16 17 17 16 18 17 18) #(19 19 19 18 19 19 20) #(19 20 19 20 20 20 19))"

On 25 Apr 2017, at 22:08, Stephane Ducasse <stepharo.self@gmail.com> wrote:

#(16 17 17 16 18 17 18 19 19 19 18 19 19 20 19 20 19 20 20 20 19 20)

->

{ #(17 17 16 18 17 18 19) . #(19 19 18 19 19 20 19) . #(20 19 20 20 20 19 20)}

any code?