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Challenges Evaluate a single variable polynomial equation

Vyxal, 6, 5, 4 bytes Źe*∑ Try it Online! Takes input in the format coeffs, x Explained Źe*∑ Ź # Generate range [0, len(coeffs)) e # Calculate x ** [0, len(coeffs) (vectorising) ...

posted 4y ago by lyxal‭  ·  edited 4y ago by lyxal‭

Answer
#9: Post edited by user avatar lyxal‭ · 2021-01-11T22:38:14Z (almost 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <strike>6</strike> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • e*∑
  • # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <s>6</s>, <s>5</s>, 4 bytes
  • ```
  • Źe*∑
  • ```
  • [Try it Online!](http://lyxal.pythonanywhere.com?flags=&code=%C5%B9e*%E2%88%91&inputs=%5B1.0,%202.0,%203.0,%204.0%5D%0A1.5)
  • Takes input in the format `coeffs, x`
  • ## Explained
  • ```
  • Źe*∑
  • Ź # Generate range [0, len(coeffs))
  • e # Calculate x ** [0, len(coeffs) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • # Sum that list and output
  • ```
#8: Post edited by user avatar Moshi‭ · 2020-11-14T00:37:37Z (about 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <del>6</del> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <strike>6</strike> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
#7: Post edited by user avatar moony‭ · 2020-11-13T23:39:13Z (about 4 years ago)
#6: Post edited by user avatar lyxal‭ · 2020-11-13T23:38:58Z (about 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), ~~6~~ 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <del>6</del> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
#5: Post edited by user avatar lyxal‭ · 2020-11-13T23:27:41Z (about 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <s>.6.</s> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), ~~6~~ 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
#4: Post edited by user avatar lyxal‭ · 2020-11-13T23:27:16Z (about 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <s>6</s> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <s>.6.</s> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
#3: Post edited by user avatar lyxal‭ · 2020-11-13T23:26:48Z (about 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), 6 bytes
  • $:ʁe*∑
  • Takes input in the format `coeffs, x`
  • ## Explained
  • ```$:ʁe*∑
  • $ # Swap the two inputs so that the stack is [coeffs, x]
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), <s>6</s> 5 bytes
  • :ʁe*∑
  • Takes input in the format `x, coeffs`
  • ## Explained
  • ```
  • :ʁe*∑
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
#2: Post edited by user avatar lyxal‭ · 2020-11-13T23:25:35Z (about 4 years ago)
  • # [Vyxal](https://github.com/Lyxal/Vyxal), 6 bytes
  • $:ʁe*∑
  • ## Explained
  • ```$:ʁe*∑
  • $ # Swap the two inputs so that the stack is [coeffs, x]
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
  • # [Vyxal](https://github.com/Lyxal/Vyxal), 6 bytes
  • $:ʁe*∑
  • Takes input in the format `coeffs, x`
  • ## Explained
  • ```$:ʁe*∑
  • $ # Swap the two inputs so that the stack is [coeffs, x]
  • :ʁ # Duplicate x and generate the range [0, x)
  • e # Calculate x ** [0, x) (vectorising)
  • * # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
  • ∑ # Sum that list and output
  • ```
#1: Initial revision by user avatar lyxal‭ · 2020-11-13T23:25:12Z (about 4 years ago)
# [Vyxal](https://github.com/Lyxal/Vyxal), 6 bytes

    $:ʁe*∑

## Explained

```$:ʁe*∑
$       # Swap the two inputs so that the stack is [coeffs, x]
 :ʁ     # Duplicate x and generate the range [0, x)
   e    # Calculate x ** [0, x) (vectorising)
    *   # Multiply the coefficients by the exponated x's. The lists are extended with 0s to be the same length
     ∑  # Sum that list and output
```