Linked Questions

126
votes
76answers
37k views

Tips for golfing in JavaScript

What general tips do you have for golfing in JavaScript? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to JavaScript (e.g. "remove ...
106
votes
93answers
15k views

Loading… Forever

Your challenge is to make an infinite loading screen, that looks like this: Or, to be more specific: Take no input. Output Loading..., with a trailing space, but ...
76
votes
91answers
10k views

N(e(s(t))) a string

To "function nest" a string, you must: Treat the first character as a function, and the following characters as the arguments to that function. For example, if the input string was ...
47
votes
88answers
7k views

Alphabet triangle

You are to print this exact text: ...
50
votes
79answers
6k views

Find the smallest number that doesn't divide N

This challenge is simple enough that it's basically all in the title: you're given a positive integer N and you should return the smallest positive integer which is not a divisor of N. An example: ...
46
votes
59answers
5k views

Output the alphabet, the ALPHABET, or just a character

The challenge is simple: Write a function or program that takes an input x, and outputs the lower case alphabet if x is part of ...
39
votes
67answers
9k views

Draw an ASCII chess board!

Here is a simple challenge for you: You must produce this ASCII representation of a chess board. White is represented by uppercase characters, and black is represented by lowercase. Empty tiles are ...
41
votes
59answers
4k views

Can this number be written in (3^x) - 1 format?

Challenge: Create a program that accepts a positive integer and checks if it can be written in the form of (3^x)-1, where X is another positive integer. If it can, output X If it can't, output -1 ...
22
votes
67answers
6k views

Display numbers lacking 2's

Display numbers from one to one-hundred (in increasing order), but number 2 shouldn’t appear anywhere in the sequence. So, for example, the numbers two (2) or ...
36
votes
51answers
6k views

Don't give me five!

Question : You will be given the starting and ending integers of a sequence and should return the number of integers within it which do not contain the digit 5. ...
33
votes
57answers
6k views

Is my barcode valid?

An EAN-8 barcode includes 7 digits of information and an 8th checksum digit. The checksum is calculated by multiplying the digits by 3 and 1 alternately, adding the results, and subtracting from the ...
26
votes
57answers
3k views

Count the divisors of a number

Introduction This is a very simple challenge: simply count the divisors of a number. We've had a similar but more complicated challenge before, but I'm intending this one to be entry-level. The ...
46
votes
30answers
4k views

Element names above 118

IUPAC in their insufferable wisdom have created a systematic element name for any newly created element. This is the temporary name of an element until they finally make up their minds about an actual ...
20
votes
56answers
5k views

Compare two numbers given as strings

I have a problem at work. I need to compare two numbers that come as strings from two different databases. The numbers may come with leading zeroes and/or leading/trailing spaces. So I may have ...
37
votes
40answers
3k views

Is it a balanced number?

A number is balanced if the sum of the digits on each half of the number is equal, so: 1423 is balanced because 1+4 = 2+3, so is:...

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