14 lines
354 B
CoffeeScript
14 lines
354 B
CoffeeScript
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dot_product = (ary1, ary2) ->
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if ary1.length != ary2.length
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throw "can't find dot product: arrays have different lengths"
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dotprod = 0
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for v, i in ary1
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dotprod += v * ary2[i]
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dotprod
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console.log dot_product([ 1, 3, -5 ], [ 4, -2, -1 ]) # 3
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try
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console.log dot_product([ 1, 3, -5 ], [ 4, -2, -1, 0 ]) # exception
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catch e
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console.log e
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