Write a program or function that given an integer radius r returns the number of unit squares the circle with radius r centered at the origin passes through. If the circle passes exactly through a point on the grid that does not count as passing through the adjacent unit squares.
Here's an illus...
Your task is to calculate the modulo (remainder) of two numbers, which can be taken as command line arguments or from STDIN.
Rules
The only operators you may use are the bitwise operators (and, or, xor, etc.), comparison operators (greater than, less than, equal to, etc.), the assignment o...
Input specification: you will be given one integer (n) in the beginning. Then, the following n lines will have two strings: The name of the student and his/her preferred game (Football, Basketball or Volleyball) where n is between 1 and 10,000 names are at most 20 char strings containing only 26 ...
@ChristopherPeart You know what I just realized your question is? Output the prime factorization of a number, given that the number is divisible by 3, 5, and 7.
I'm looking for MS/PhD programs in Computational Biology. I'm interested in doing data mining on biological data but my background in CS is very limited. I have a bachelor in Biochemistry so I think it's more relevant for me to apply to Computational Biology instead of straight Computer Science p...
@ChristopherPeart standard out is a technical term describing the standard output stream and through which text is written to the console. It's not the standards for output we have on this site, which allow, for example, StdErr, the return value of a function, exit code, etc.
@ChristopherPeart stdout is where most languages print to. On PPCG it's also allowed to output to a file, or return from a function, or to STDERR, or some other ways
this is my Python solution without builtins (well, one to factorize an integer)
from sympy import factorint
import operator as op
from functools import reduce
def a(n):
if n == 0: return 0
return 8*n - 4 * reduce(op.mul,
(2*e + 1 for p, e in factorint(n).items() if p % 4 == 1), 1)
@ChristopherPeart I usually write something like you may take the input and the output in any reasonable format. For example, STDIN/STDOUT, function arguments and return value, reading and writing to a file, etc.
I have gotten several questions placed on hold recently as "unclear what you're asking." Does anyone have any advice on making questions more specific?
Sometimes, I think making an abbreviated form of a language might be interesting (and make it a bit more competitive in golfing), but does it really count as a separate language if all the "interpreter" does is unabbreviate it and pass it along to the original?
Often, answers to questions asking for "programs" or talking about "programming languages" utilize things like sed, awk, … in order to get around having to write an actual shell script.
Therefore, a question comes to my mind:
What qualifies as a programming language?
Sure, ultimately the OP ca...
Never even thought about using that horrible thing
"Context-free grammars. What this really means is the code should be parsable without having to look things up in a symbol table. " Welp this guide is not going to work out
@Riker "To find the Inverse of a 2x2 Matrix: swap the positions of a and d, put negatives in front of b and c, and divide everything by the determinant (ad-bc)" The determinant is zero, so you'd get a division by zero = undefined.
@ChristopherPeart I do have some advice! Fill a niche. Find something that your language does well and do that! Don't write another stack based language cause we already have a million of those. Instead find something that other languages overlook and try to excel at that
Find fixed points of the Logistic Map
numbersequencemathcode-golf
Definitions
Logistic Map
A logistic map is defined as the following equation:
Where the next value in the map (on the left) is determined by a function of the current value (on the right), where the constant lambda represe...
@VoteToClose (>_<) sorry, just thought I would be fun, this comunity has so many fun challenges I thought I could contribute with another one, but maybe it's still too soon
@ChristopherPeart You would have to beat Mathematica for that, and for that you would have to build in a function literally to recognize images of goats.
@Riker Let A = [1,1;1,1] and consider the system of equations A* x = b. You have two equations x1 + x2 = b1 and x1 + x2 = b2 imagine those geometrically. What kind of solutions (depending on b1 and b2) do you expect? (I don't get what you mean with it's not an identity.)
@Riker since matrices are linear transforms if say for example, the area of the unit square scales up by 2 after the transformation, then all areas double after the transformation
@Riker if you have some curve, what signed are really means is the area under the curve and above the x axis minus the area above the curve and below the x-axis
Only click if A: No human is around, B: You are OK with a slightly NSFW post, C: You are OK with laughing out loud very hard: iwastesomuchtime.com/this_was_hard_t_17127
@ChristopherPeart Pretty much any language is fine. Python is a bonus since it's fairly portable. Just make sure it's non-interactive: no input prompts or similar, no greetings, and warnings/errors should go to STDERR.
Your task is to calculate the modulo (remainder) of two numbers, which can be taken as command line arguments or from STDIN.
Rules
The only operators you may use are the bitwise operators (and, or, xor, etc.), comparison operators (greater than, less than, equal to, etc.), the assignment o...
Often, answers to questions asking for "programs" or talking about "programming languages" utilize things like sed, awk, … in order to get around having to write an actual shell script.
Therefore, a question comes to my mind:
What qualifies as a programming language?
Sure, ultimately the OP ca...
Find fixed points of the Logistic Map
numbersequencemathcode-golf
Definitions
Logistic Map
A logistic map is defined as the following equation:
Where the next value in the map (on the left) is determined by a function of the current value (on the right), where the constant lambda represe...
