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| -rw-r--r-- | challenge-333/hvukman/f#/333_p1.fs | 15 |
1 files changed, 15 insertions, 0 deletions
diff --git a/challenge-333/hvukman/f#/333_p1.fs b/challenge-333/hvukman/f#/333_p1.fs new file mode 100644 index 0000000000..7bebaaf2ac --- /dev/null +++ b/challenge-333/hvukman/f#/333_p1.fs @@ -0,0 +1,15 @@ +// 333 part 1 + +let input = [ [|2;1|] ; [|2;3|] ; [|2;5|] ]; +let input2 = [ [|1;4|] ; [|3;4|] ; [|10;4|] ]; +let input3 = [ [|0;0|] ; [|1;1|] ; [|2;3|] ]; +let input4 = [ [|10000;10000|] ; [|20000;20000|] ; [|30000;30000|] ]; +let inputs_1 = [ input; input2 ; input3; input4] +// -- calculated the determinant +// -- https://de.wikipedia.org/wiki/Kollinearität#Analytische_Geometrie +let det (x:int array list) = let x1,x2,x3 = x[0].[0],x[1].[0],x[2].[0] + let y1,y2,y3 = x[0].[1],x[1].[1],x[2].[1] + let det = x1*y2 + x2*y3 + x3*y1 - x1*y3 - x2*y1 - x3*y2 + if det =0 then printf "%s\n" "true" else printf "%s\n" "false" + + |