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Ingy döt Net 2023-07-01 11:58:00 -04:00
parent 7387c8f97b
commit cb5bb5e222
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22
Task/Longest-common-subsequence/SequenceL/longest-common-subsequence.sequencel Normal file
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import <Utilities/Sequence.sl>;
lcsBack(a(1), b(1)) :=
let
aSub := allButLast(a);
bSub := allButLast(b);
x := lcsBack(a, bSub);
y := lcsBack(aSub, b);
in
[] when size(a) = 0 or size(b) = 0
else
lcsBack(aSub, bSub) ++ [last(a)] when last(a) = last(b)
else
x when size(x) > size(y)
else
y;
main(args(2)) :=
lcsBack(args[1], args[2]) when size(args) >=2
else
lcsBack("thisisatest", "testing123testing");