include-origin? ( coord-seq -- ? )


Vocabulary
project-euler.102.private

Inputs
coord-seqan object


Outputs
?an object


Definition
USING: grouping kernel math sequences ;

IN: project-euler.102.private

: include-origin? ( coord-seq -- ? )
dup first suffix 2 clump [ [ first ] [ last ] bi det ] map
2 clump [ product 0 > ] all? ;