Matrix multiplication: Difference between revisions
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Drkameleon (talk | contribs) (Added Arturo implementation) |
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{{Out}} |
{{Out}} |
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<lang AppleScript>{{51, -8, 26, -18}, {-8, -38, -6, 34}, {33, 42, 38, -14}, {17, 74, 72, 44}}</lang> |
<lang AppleScript>{{51, -8, 26, -18}, {-8, -38, -6, 34}, {33, 42, 38, -14}, {17, 74, 72, 44}}</lang> |
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=={{header|Arturo}}== |
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<lang rebol>printMatrix: function [m][ |
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loop m 'row -> print map row 'val [pad to :string .format:".2f" val 6] |
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print "--------------------------------" |
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] |
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multiply: function [a,b][ |
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X: size a |
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Y: size first b |
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result: array.of: @[X Y] 0 |
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loop 0..X-1 'i [ |
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loop 0..Y-1 'j [ |
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loop 0..(size first a)-1 'k -> |
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result\[i]\[j]: result\[i]\[j] + a\[i]\[k] * b\[k]\[j] |
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] |
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] |
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return result |
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] |
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A: [[1.0 1.0 1.0 1.0] |
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[2.0 4.0 8.0 16.0] |
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[3.0 9.0 27.0 81.0] |
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[4.0 16.0 64.0 256.0]] |
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B: @[@[ 4.0 0-3.0 4/3.0 0-1/4.0] |
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@[0-13/3.0 19/4.0 0-7/3.0 11/24.0] |
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@[ 3/2.0 0-2.0 7/6.0 0-1/4.0] |
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@[ 0-1/6.0 1/4.0 0-1/6.0 1/24.0]] |
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printMatrix A |
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printMatrix B |
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printMatrix multiply A B |
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printMatrix multiply B A</lang> |
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{{out}} |
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<pre> 1.00 1.00 1.00 1.00 |
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2.00 4.00 8.00 16.00 |
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3.00 9.00 27.00 81.00 |
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4.00 16.00 64.00 256.00 |
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-------------------------------- |
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4.00 -3.00 1.33 -0.25 |
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-4.33 4.75 -2.33 0.46 |
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1.50 -2.00 1.17 -0.25 |
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-0.17 0.25 -0.17 0.04 |
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-------------------------------- |
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1.00 0.00 -0.00 -0.00 |
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0.00 1.00 -0.00 -0.00 |
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0.00 0.00 1.00 0.00 |
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0.00 0.00 0.00 1.00 |
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-------------------------------- |
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1.00 0.00 0.00 0.00 |
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0.00 1.00 -0.00 0.00 |
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0.00 0.00 1.00 0.00 |
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0.00 0.00 -0.00 1.00 |
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--------------------------------</pre> |
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=={{header|AutoHotkey}}== |
=={{header|AutoHotkey}}== |
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