Post History

75%

+4 −0

Challenges Evaluate a single variable polynomial equation

Raku, 19 bytes (*Z*(*X**0..*)).sum Try it online! Is it concerning that my solution is over 30% asterisks? Explanation ( ).sum # Get the sum of *Z*( ) # The inp...

posted 6y ago by Jo King‭ · edited 6y ago by Jo King‭

Answer

#2: Post edited by

Jo King‭ · 2020-11-15T12:21:04Z (almost 6 years ago)

Copy Link

Raw

Markdown

# [Raku], 19 bytes
(*Z*(*X**0..*)).sum
[Try it online!][TIO-khj2txnr]
[Raku]: https://github.com/nxadm/rakudo-pkg
[TIO-khj2txnr]: https://tio.run/##PYyxDoIwGIT3PsU/SVvh0lZqNIYmDm7OxkgYGCAhASVUB56@ghiW73KXL9dXQ7sP3bips8DlQ3J5l1IBUgj4TxdOzJcj1Ry5KnC5na8xcl0IyhxtkZuC6tdAbfOsvHPwfdu8eZS4SAQNRYkjfTC/YFOPySxjOuPIDOw6Kdg5drCrGU9tQvo/WgSTwtgv "Perl 6 – Try It Online"
Is it concerning that my solution is over 30% asterisks?
### Explanation
~~~
( ).sum # Get the sum of
*Z*( ) # The input list zip multiplied by
*X** # The second input to the power of
0..* # 0 to infinity
~~~~~~~

# [Raku], 19 bytes
(*Z*(*X**0..*)).sum
[Try it online!][TIO-khj2txnr]
[Raku]: https://github.com/nxadm/rakudo-pkg
[TIO-khj2txnr]: https://tio.run/##PYyxDoIwGIT3PsU/SVvh0lZqNIYmDm7OxkgYGCAhASVUB56@ghiW73KXL9dXQ7sP3bips8DlQ3J5l1IBUgj4TxdOzJcj1Ry5KnC5na8xcl0IyhxtkZuC6tdAbfOsvHPwfdu8eZS4SAQNRYkjfTC/YFOPySxjOuPIDOw6Kdg5drCrGU9tQvo/WgSTwtgv "Perl 6 – Try It Online"
Is it concerning that my solution is over 30% asterisks?
### Explanation
~~~
( ).sum # Get the sum of
*Z*( ) # The input list zip multiplied by
*X** # The second input to the power of
0..* # 0 to infinity
~~~
An alternate curried solution for 19 bytes is:

{*.reduce(*×$_+*)}
[Try it online!][TIO-khj365hj]
[Perl 6]: https://github.com/nxadm/rakudo-pkg
[TIO-khj365hj]: https://tio.run/##K0gtyjH7n1uplmb7v1pLryg1pTQ5VUPr8HSVeG0tzdr/1lzFiZUKaRp60YaxmkDSIFbPNczRB6iwLLWoOFVTwdZOQVsv2ihWIS2/SCEnMy@12M5Or7ggJ7NEQ13XTl3T@r@hnoGCrp2CoYURmOIC8nUUjCCCJiDCkstIzxQuZKBnCqKM9UzhKnWAPCBhAjUIosDIRM/IFAA "Perl 6 – Try It Online"

#1: Initial revision by

Jo King‭ · 2020-11-15T12:14:54Z (almost 6 years ago)

Copy Link

Raw

Markdown

# [Raku], 19 bytes

<!-- language-all: lang-perl6 -->

    (*Z*(*X**0..*)).sum

[Try it online!][TIO-khj2txnr]

[Raku]: https://github.com/nxadm/rakudo-pkg
[TIO-khj2txnr]: https://tio.run/##PYyxDoIwGIT3PsU/SVvh0lZqNIYmDm7OxkgYGCAhASVUB56@ghiW73KXL9dXQ7sP3bips8DlQ3J5l1IBUgj4TxdOzJcj1Ry5KnC5na8xcl0IyhxtkZuC6tdAbfOsvHPwfdu8eZS4SAQNRYkjfTC/YFOPySxjOuPIDOw6Kdg5drCrGU9tQvo/WgSTwtgv "Perl 6 – Try It Online"

Is it concerning that my solution is over 30% asterisks?

### Explanation 
~~~
(             ).sum  # Get the sum of
 *Z*(        )       # The input list zip multiplied by
     *X**            # The second input to the power of
         0..*        # 0 to infinity
~~~

Communities

Post History