USING: tools.test math arrays kernel sequences ;
{ { } } [ { } [ < ] monotonic-split ] unit-test
-[ { { 1 } { -1 5 } { 2 4 } } ]
-[ { 1 -1 5 2 4 } [ < ] monotonic-split [ >array ] map ] unit-test
-[ { { 1 1 1 1 } { 2 2 } { 3 } { 4 } { 5 } { 6 6 6 } } ]
-[ { 1 1 1 1 2 2 3 4 5 6 6 6 } [ = ] monotonic-split [ >array ] map ] unit-test
+{ { V{ 1 } } } [ { 1 } [ < ] monotonic-split ] unit-test
+{ { V{ 1 2 } } } [ { 1 2 } [ < ] monotonic-split ] unit-test
+{ { V{ 1 } V{ 2 } } } [ { 1 2 } [ > ] monotonic-split ] unit-test
+[ { V{ 1 } V{ -1 5 } V{ 2 4 } } ]
+[ { 1 -1 5 2 4 } [ < ] monotonic-split ] unit-test
+[ { V{ 1 1 1 1 } V{ 2 2 } V{ 3 } V{ 4 } V{ 5 } V{ 6 6 6 } } ]
+[ { 1 1 1 1 2 2 3 4 5 6 6 6 } [ = ] monotonic-split ] unit-test
[ { } ]
[ { } [ = ] slice monotonic-slice ] unit-test
<PRIVATE
-: ,, ( obj -- ) building get last push ;
-: v, ( -- ) V{ } clone , ;
-: ,v ( -- ) building get dup last empty? [ dup pop* ] when drop ;
-
: (monotonic-split) ( seq quot -- newseq )
- [
- [ dup unclip suffix ] dip
- v, '[ over ,, @ [ v, ] unless ] 2each ,v
- ] { } make ; inline
+ [ V{ } clone V{ } clone ] 2dip [ ] swap '[
+ [ [ over push ] keep ] dip
+ [ @ [ over push V{ } clone ] unless ] keep
+ ] map-reduce over push over push { } like ; inline
PRIVATE>