Linked Questions

78 votes
250 answers

Is this even or odd?

Note: There is not been a vanilla parity test challenge yet (There is a C/C++ one but that disallows the ability to use languages other than C/C++, and other non-vanilla ones are mostly closed too), ...
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  • 5,271
89 votes
199 answers

Find the Factorial!

Create the shortest program or function that finds the factorial of a non-negative integer. The factorial, represented with ! is defined as such $$n!:=\begin{...
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163 votes
91 answers

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 ...
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  • 5,952
78 votes
182 answers

Sum of all integers from 1 to n

I'm honestly surprised that this hasn't been done already. If you can find an existing thread, by all means mark this as a duplicate or let me know. Input Your input is in the form of any positive ...
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  • 1,239
90 votes
145 answers

Determine whether strings are anagrams

Challenge Given two strings, work out if they both have exactly the same characters in them. Example Input word, wrdo This returns true because they are the ...
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  • 1,209
71 votes
148 answers

The alphabet in programming languages

Our task is to, for each letter of the (English) alphabet, write a program that prints the alphabet, in a language whose name starts with that letter. Input: none Output: ...
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  • 10.4k
62 votes
151 answers

Draw an asterisk triangle

Inspired by a task for programming 101 here's a task that hopefully isn't too easy or is a duplicate (kinda hard to search for things like this). Input: A positive integer ...
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  • 1,145
56 votes
135 answers

Print 0 to 100 without 1-9 characters

Print 0 to 100 without using characters 1,2,3,4,5,6,7,8,9 in your code. Seperator of numbers can be comma, whitespace or newline. Shortest code wins.
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68 votes
124 answers

Print/Output the L-phabet

Inspired by George Gibson's Print a Tabula Recta. You are to print/output this exact text: ...
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  • 48.2k
63 votes
121 answers

Reverse stdin and place on stdout

Requirements: Take an input on stdin including new lines / carriage returns of unlimited length (only bounded by system memory; that is, there is no inherent limit in the program.) Output the reverse ...
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  • 3,272
50 votes
146 answers

Stay away from zero

Task Given a non-negative integer n, output 1 if n is 0,...
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  • 48.2k
45 votes
139 answers

Full Width Text

Full width text is text that has a space after every character, including the last one. For instance, the first sentence of this question becomes: ...
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50 votes
116 answers

Is this number evil?

Introduction In number theory, a number is considered evil if there are an even number of 1's in its binary representation. In today's challenge, you will be identifying whether or not a given number ...
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30 votes
133 answers

Multiply two numbers

Input: Two decimal integers. These can be given to the code in standard input, as arguments to the program or function, or as a list. Output: Their product, as a decimal integer. For example, the ...
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  • 6,217
52 votes
75 answers

Output Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo

Challenge The goal is to output Buffalo buffalo Buffalo buffalo buffalo buffalo Buffalo buffalo. Context. (Maybe another interesting challenge could be printing all ...
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  • 717

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