From 6b3075d90d945d5e7e8fd4d28284ffd99dbeb82e Mon Sep 17 00:00:00 2001 From: Shinya Sato Date: Fri, 24 Sep 2021 16:42:54 +0900 Subject: v0.4.1 --- sample/msort.in | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 sample/msort.in (limited to 'sample/msort.in') diff --git a/sample/msort.in b/sample/msort.in new file mode 100644 index 0000000..599990b --- /dev/null +++ b/sample/msort.in @@ -0,0 +1,28 @@ +// Merge sort + +// Rules +msort(ret) >< [] => ret~[]; +msort(ret) >< x:xs => ms_tail(ret, x)~xs; + +ms_tail(ret, n) >< [] => ret~[n]; +ms_tail(ret, n) >< x:xs => + split(left,right) ~ (n:x:xs), + msort(a)~left, msort(b)~right, merge(ret,b)~a; + +merge(ret, snd) >< [] => ret~snd; +merge(ret, snd) >< x:xs => mergeCC(ret, x, xs)~snd; + +mergeCC(ret, int y, ys) >< [] => ret~(y:ys); +mergeCC(ret, int y, ys) >< (int x):xs +| x <= y => ret~(x:cnt), mergeCC(cnt, y, ys) ~ xs +| _ => ret~(y:cnt), mergeCC(cnt, x, xs) ~ ys; + + +split(right,left) >< [] => right~[], left~[]; +split(right,left) >< x:xs => + right~(x:cntl), left~cntr, split(cntr,cntl)~xs; + + +// Nets +msort(ret)~[3,6,1,9,2]; +ret; \ No newline at end of file -- cgit v1.2.3