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Challenges Evaluate a single variable polynomial equation

Python 3, 167 127 118 117 94 63 bytes def f(a,b): y=0 for z in range(len(a)):y+=a[z]*b**z print(y) Try it online! Close gap to @user's lambda answer! Golfed 40 bytes thanks to @user's...

posted 2y ago by General Sebast1an‭  ·  edited 2y ago by General Sebast1an‭

Answer
#7: Post edited by user avatar General Sebast1an‭ · 2021-09-21T02:36:52Z (over 2 years ago)
  • # [Python 3], <s>167</s> <s>127</s> <s>118</s> <s>117</s> 94 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:a=float(input())
  • &#9;except:break
  • &#9;y+=a*x**z;z+=1
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksrd0p54]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksrd0p54]: https://tio.run/##XcqxDsIgEADQmfsKR6BNA1YXGj7mNJgSG0rIGTl@Hpkd3vYy036mtffqX8eJJGPKH5JKbTw3b2YD3z0e4WIdCCrs8K@BCPUZMrlHCfgGwZNHXbVuW5u8hVxiIsmqd7vcwS4GrsM63Ab8AQ "Python 3 – Try It Online"
  • # [Python 3], <s>167</s> <s>127</s> <s>118</s> <s>117</s> <s>94</s> 63 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>def f(a,b):
  • &#9;y=0
  • &#9;for z in range(len(a)):y+=a[z]*b**z
  • &#9;print(y)
  • </code></pre>
  • [Try it online!][TIO-kttgfxko]
  • Close gap to [**@user**](https://codegolf.codidact.com/users/53837)'s [`lambda` answer](https://codegolf.codidact.com/posts/279159/283562#answer-283562)!
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-kttgfxko]: https://tio.run/##K6gsycjPM/7/PyU1TSFNI1EnSdOKi7PS1oCLMy2/SKFKITNPoSgxLz1VIyc1TyNRU9OqUts2MboqVitJS6uKi7OgKDOvRKNS83@aRrShnkGsjqGFkSYXhKNjBBIwAXON9EwhXAM9U2R5HWMgNgFrBEr8BwA "Python 3 – Try It Online"
#6: Post edited by user avatar General Sebast1an‭ · 2021-08-25T10:35:20Z (over 2 years ago)
  • # [Python 3], <s>167</s> <s>127</s> <s>118</s> 117 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:a=float(input())
  • &#9;except:break
  • &#9;if z^0:y+=a*x**z;z+=1
  • &#9;else:y+=a;z+=1
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksrcx59d]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksrcx59d]: https://tio.run/##XcqxDsIgFIXhmfsUHYE2DVhdaHgVEzQ0JRJK8BqBl0eim8M3nJM/FtyPsLSW9eYPg9SF@ELK2FqmqsUk4L07bwepgGAqyvxlQGy@24jqlqx5AHHbUK9ClVEbnjmvax217JF/2u/52zG5gLSw1uR8ATkLOHVLd@7MBw "Python 3 – Try It Online"
  • # [Python 3], <s>167</s> <s>127</s> <s>118</s> <s>117</s> 94 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:a=float(input())
  • &#9;except:break
  • &#9;y+=a*x**z;z+=1
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksrd0p54]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksrd0p54]: https://tio.run/##XcqxDsIgEADQmfsKR6BNA1YXGj7mNJgSG0rIGTl@Hpkd3vYy036mtffqX8eJJGPKH5JKbTw3b2YD3z0e4WIdCCrs8K@BCPUZMrlHCfgGwZNHXbVuW5u8hVxiIsmqd7vcwS4GrsM63Ab8AQ "Python 3 – Try It Online"
#5: Post edited by user avatar General Sebast1an‭ · 2021-08-25T10:32:31Z (over 2 years ago)
  • # [Python 3], <s>167</s> <s>127</s> 118 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:a=float(input())
  • &#9;except:break
  • &#9;if z==0:y+=a;z+=1
  • &#9;else:y+=a*x**z;z+=1
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksia37y2]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksia37y2]: https://tio.run/##XcqxDsIgFIXhmfsUHYE2DVhdaHgYNDQlEkroNQIvj0Q3h284J38suB9haS3rzR8GqQvxhZSxtUxVi0nAe3feDlIBwVSU@cuA2PywEdU9WfME4rahai1UGbVZ66hlD/xpv5tnzuvvjMkFpIW1JucbyFnApVu6a2c@ "Python 3 – Try It Online"
  • # [Python 3], <s>167</s> <s>127</s> <s>118</s> 117 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:a=float(input())
  • &#9;except:break
  • &#9;if z^0:y+=a*x**z;z+=1
  • &#9;else:y+=a;z+=1
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksrcx59d]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksrcx59d]: https://tio.run/##XcqxDsIgFIXhmfsUHYE2DVhdaHgVEzQ0JRJK8BqBl0eim8M3nJM/FtyPsLSW9eYPg9SF@ELK2FqmqsUk4L07bwepgGAqyvxlQGy@24jqlqx5AHHbUK9ClVEbnjmvax217JF/2u/52zG5gLSw1uR8ATkLOHVLd@7MBw "Python 3 – Try It Online"
#4: Post edited by user avatar General Sebast1an‭ · 2021-08-19T02:04:30Z (over 2 years ago)
  • # [Python 3], <s>167</s> 127 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:
  • &#9;&#9;a=float(input())
  • &#9;&#9;if z==0:y+=a;z+=1;continue
  • &#9;&#9;y+=a*x**z;z+=1
  • &#9;except:break
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-kshok75l]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • >The first revision is now readily available to be ran in [MarkFuncs](https://github.com/JoyrenceMatthewAgas/MarkFuncs). It's a cool program I made that I hope you'll enjoy using. Please read the tutorial before running it if you don't know how it works.
  • [Python 3]: https://docs.python.org/3/
  • [TIO-kshok75l]: https://tio.run/##XYpBDsIgFAXXcIougTYErG4gHAYbmhIbIOQ3ApdHdOli3mLmpQpHDGvvxexntEB8SBcQSnVdmhGLwO/Dn26SCiPIdSyyf8@h/D41Y4Sqs7G6zUbqLQbw4XIjfiUrjLVfwciVzSVQz@zsC6fsA5BKe5f8gSUX@DZYB3cuPg "Python 3 – Try It Online"
  • # [Python 3], <s>167</s> <s>127</s> 118 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:a=float(input())
  • &#9;except:break
  • &#9;if z==0:y+=a;z+=1
  • &#9;else:y+=a*x**z;z+=1
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksia37y2]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksia37y2]: https://tio.run/##XcqxDsIgFIXhmfsUHYE2DVhdaHgYNDQlEkroNQIvj0Q3h284J38suB9haS3rzR8GqQvxhZSxtUxVi0nAe3feDlIBwVSU@cuA2PywEdU9WfME4rahai1UGbVZ66hlD/xpv5tnzuvvjMkFpIW1JucbyFnApVu6a2c@ "Python 3 – Try It Online"
#3: Post edited by user avatar General Sebast1an‭ · 2021-08-19T02:03:30Z (over 2 years ago)
  • # [Python 3], <s>167</s> 127 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:
  • &#9;&#9;a=float(input())
  • &#9;&#9;if z==0:y+=a;z+=1;continue
  • &#9;&#9;y+=a*x**z;z+=1
  • &#9;except:break
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-kshok75l]
  • Golfed 40 bytes thanks to [user](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772).
  • >The first revision is now readily available to be ran in [MarkFuncs](https://github.com/JoyrenceMatthewAgas/MarkFuncs). It's a cool program I made that I hope you'll enjoy using. Please read the tutorial before running it if you don't know how it works.
  • [Python 3]: https://docs.python.org/3/
  • [TIO-kshok75l]: https://tio.run/##XYpBDsIgFAXXcIougTYErG4gHAYbmhIbIOQ3ApdHdOli3mLmpQpHDGvvxexntEB8SBcQSnVdmhGLwO/Dn26SCiPIdSyyf8@h/D41Y4Sqs7G6zUbqLQbw4XIjfiUrjLVfwciVzSVQz@zsC6fsA5BKe5f8gSUX@DZYB3cuPg "Python 3 – Try It Online"
  • # [Python 3], <s>167</s> 127 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:
  • &#9;&#9;a=float(input())
  • &#9;&#9;if z==0:y+=a;z+=1;continue
  • &#9;&#9;y+=a*x**z;z+=1
  • &#9;except:break
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-kshok75l]
  • Golfed 40 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772). Golfed another 9 bytes thanks to [**@user**](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12782).
  • >The first revision is now readily available to be ran in [MarkFuncs](https://github.com/JoyrenceMatthewAgas/MarkFuncs). It's a cool program I made that I hope you'll enjoy using. Please read the tutorial before running it if you don't know how it works.
  • [Python 3]: https://docs.python.org/3/
  • [TIO-kshok75l]: https://tio.run/##XYpBDsIgFAXXcIougTYErG4gHAYbmhIbIOQ3ApdHdOli3mLmpQpHDGvvxexntEB8SBcQSnVdmhGLwO/Dn26SCiPIdSyyf8@h/D41Y4Sqs7G6zUbqLQbw4XIjfiUrjLVfwciVzSVQz@zsC6fsA5BKe5f8gSUX@DZYB3cuPg "Python 3 – Try It Online"
#2: Post edited by user avatar General Sebast1an‭ · 2021-08-18T16:01:45Z (over 2 years ago)
  • # [Python 3], 167 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>n=[]
  • while True:
  • &#9;try:a=float(input());n.append(a);continue
  • &#9;except:break
  • x=float(input());y=0
  • for i in range(len(n)):
  • &#9;if i==0:y+=n[i];continue
  • &#9;y+=n[i]*x**i
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-ksgudvzh]
  • Not exactly "golfy", but it's more manageable than C. lmao
  • The form of input uses a `while` loop to take the array of numbers, simply `float`s, then the inputting stops if the input can't be converted into a `float`. Then takes another input for basing the calculation. And yes, I wrote the variable names as `n` and `x`.
  • >The first revision is now readily available to be ran in [MarkFuncs](https://github.com/JoyrenceMatthewAgas/MarkFuncs). It's a cool program I made that I hope you'll enjoy using. Please read the tutorial before running it if you don't know how it works.
  • [Python 3]: https://docs.python.org/3/
  • [TIO-ksgudvzh]: https://tio.run/##Xc2xDoIwFAXQmfcVHVtMCIguJf0LN8JQ8SEvktemKZF@fe3gYBzOcpN7r09xddznzGac4L3ShuIWdtRQxZC0NcvmbJTEfo9SqYEb6z3yQ1o1zI4j8Y5Q4TGjj/oe0L7g@O8k08LigiBBLILlJ8oNWbJS5YUWQca0Op0MjzT9jH6T@qhrAh@Io0wq565p4Vz0xaWw0DXXDw "Python 3 – Try It Online"
  • # [Python 3], <s>167</s> 127 bytes
  • <!-- language-all: lang-python -->
  • <pre><code>x=float(input());y,z=0,0
  • while 1:
  • &#9;try:
  • &#9;&#9;a=float(input())
  • &#9;&#9;if z==0:y+=a;z+=1;continue
  • &#9;&#9;y+=a*x**z;z+=1
  • &#9;except:break
  • print(y)
  • </code></pre>
  • [Try it online!][TIO-kshok75l]
  • Golfed 40 bytes thanks to [user](https://codegolf.codidact.com/users/53837)'s [advice](https://codegolf.codidact.com/comments/thread/4089#comment-12772).
  • >The first revision is now readily available to be ran in [MarkFuncs](https://github.com/JoyrenceMatthewAgas/MarkFuncs). It's a cool program I made that I hope you'll enjoy using. Please read the tutorial before running it if you don't know how it works.
  • [Python 3]: https://docs.python.org/3/
  • [TIO-kshok75l]: https://tio.run/##XYpBDsIgFAXXcIougTYErG4gHAYbmhIbIOQ3ApdHdOli3mLmpQpHDGvvxexntEB8SBcQSnVdmhGLwO/Dn26SCiPIdSyyf8@h/D41Y4Sqs7G6zUbqLQbw4XIjfiUrjLVfwciVzSVQz@zsC6fsA5BKe5f8gSUX@DZYB3cuPg "Python 3 – Try It Online"
#1: Initial revision by user avatar General Sebast1an‭ · 2021-08-18T02:23:15Z (over 2 years ago)
# [Python 3], 167 bytes

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

<pre><code>n=[]
while True:
&#9;try:a=float(input());n.append(a);continue
&#9;except:break
x=float(input());y=0
for i in range(len(n)):
&#9;if i==0:y+=n[i];continue
&#9;y+=n[i]*x**i
print(y)
</code></pre>

[Try it online!][TIO-ksgudvzh]

Not exactly "golfy", but it's more manageable than C. lmao

The form of input uses a `while` loop to take the array of numbers, simply `float`s, then the inputting stops if the input can't be converted into a `float`. Then takes another input for basing the calculation. And yes, I wrote the variable names as `n` and `x`.

>The first revision is now readily available to be ran in [MarkFuncs](https://github.com/JoyrenceMatthewAgas/MarkFuncs). It's a cool program I made that I hope you'll enjoy using. Please read the tutorial before running it if you don't know how it works.

[Python 3]: https://docs.python.org/3/
[TIO-ksgudvzh]: https://tio.run/##Xc2xDoIwFAXQmfcVHVtMCIguJf0LN8JQ8SEvktemKZF@fe3gYBzOcpN7r09xddznzGac4L3ShuIWdtRQxZC0NcvmbJTEfo9SqYEb6z3yQ1o1zI4j8Y5Q4TGjj/oe0L7g@O8k08LigiBBLILlJ8oNWbJS5YUWQca0Op0MjzT9jH6T@qhrAh@Io0wq565p4Vz0xaWw0DXXDw "Python 3 – Try It Online"