What is the Sandbox?
This "Sandbox" is a place where Programming Puzzles & Code Golf (PPCG) users can get feedback on prospective challenges they wish to post to the main page. This is useful because writing a clear and fully specified challenge on the first try can be difficult. There is a much...
+Say you have a hollow sphere, about the size of a grapefruit, comprised of a (let's say red) top half and a (let's say white) bottom half. There's an articulated lid, and an LED on the front. Most importantly, it fits in the pocket of your pants (or skirt, if skirts have pockets).
Now, somehow...
JavaScript
An easy hello world with indexOf.
var a = "AAAABBBBBBBCCCC,,,,, Hello World!, AAAABBBBBBBCCCC";
if(a.indexOf("Hello World!") > -1)
{
alert("Hello World!");
}
The three newest questions are all in negative territory. I am new here and it does not seem very friendly. In a high traffic site I can see the luxury of being negative occasionally but please be more encouraging.
I've come across the following answer in a code-golf challenge in Haskell, where one has to provide a function:
<bindings>
<expression>
Now, the last line on its own is a curried expression and as such eligible. However, without the previous definitions, it won't work and results in an error. ...
Your task is pretty simple, calculate the n-th element of A190810.
Elements of A190810 are calculated according to these rules:
The first element is 1
The sequence is increasing
If x occurs in the sequence, then 2x+1 and 3x-1 also do
You can use 1-based or 0-based indexing, but if you use 0-...
