Horner's rule for polynomial evaluation: Difference between revisions
Horner's rule for polynomial evaluation (view source)
Revision as of 06:14, 7 October 2022
, 1 year ago→{{header|jq}}
Thundergnat (talk | contribs) m (syntax highlighting fixup automation) |
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console.log(horner([-19,7,-4,6],3)); // ==> 128
</syntaxhighlight>
=={{header|jq}}==
<syntaxhighlight lang=jq>
# Input: an array of coefficients specifying the polynomial
# to be evaluated at $x, where .[0] is the constant
def horner($x):
. as $coefficients
| reduce range(length-1; -1; -1) as $i (0; . * $x + $coefficients[$i]);
# Example
[-19, 7, -4, 6] | horner(3)
</syntaxhighlight>
'''Invocation''': $JQ -n -f horner.jq
where $JQ is either jq or gojq
{{output}}
<pre>
128
</pre>
=={{header|Julia}}==
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