Talk:Sum and product puzzle
Remove draft status?
Now that I improved the task description, is this task ready for prime time? --Smls (talk) 14:47, 5 August 2016 (UTC)
Scala
Could someone in the know please explain these two lines in plain English?
val step2 = step0 filter { sumEq(_) forall { prodEq(_).size != 1 }}
step2 contains the pairs whose product is unique and ??
val step3 = step2 filter { prodEq(_).intersect(step2).size == 1 }