Linked Questions

51
votes
12answers
5k views

5, 2, 16, 3580, What comes next?

Consider the positive integer powers of five in decimal. Here are the first 25, right aligned: ...
50
votes
66answers
18k views

Helloellolloloo Worldorldrldldd

Make a program that takes the word you input, and adds that word to the back of itself minus its first letter, then repeats until all letters are gone. For example, ...
50
votes
24answers
7k views

Minecraft Mirrored

This is Calvin. Just trying to get 20 rep so this user can chat in the PPCG Minecraft Server chatroom. Write a program or function that takes in a positive integer. If the integer is even (2, 4, 6, ....
50
votes
12answers
4k views

Alex is sometimes right

This challenge is to lift the spirits of our mod Alex A., who is usually wrong. Suppose you have a friend named Alex who needs help with basic logic and math, specifically mathematical equivalence. ...
49
votes
88answers
7k views

Alphabet triangle

You are to print this exact text: ...
47
votes
15answers
5k views

ASCII Art of the Day #1 - Double Knot

Write a full program or a function that takes a positive integer N as input via STDIN/command line/ARGV or function arguments and prints an ASCII double knot ...
46
votes
43answers
4k views

Tips for golfing in PowerShell

What general tips do you have for golfing in Windows PowerShell? I'm looking for ideas that can be applied to code golf problems in general that are at least somewhat specific to PowerShell (e.g. "...
46
votes
69answers
7k views

Make an Emergency Corridor

In some nations there are recommendations or laws on how to form emergency corridors on streets that have multiple lanes per direction. (In the following we only consider the lanes going in the ...
45
votes
23answers
2k views

Hexadecimal and the Alphabet

In this challenge, you will receive an input, convert it to hexadecimal, make a couple changes, and output the result. Because they are only 16 characters in hexadecimal, your code will need to be as ...
44
votes
132answers
6k views

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: ...
44
votes
91answers
5k views

StringgnirtSStringgnirtSStringgnirtS

Here is a relatively simple challenge for you. Given a string of length N, output the string forwards, then backwards, then forwards, then backwards... etc. N times. For example, if your input was <...
43
votes
67answers
13k views

Hack into a Lottery

You've recently made an account on a dodgy gambling site, where for a fee of 25 dollars, they will pay you back a random amount between 0 and 50 dollars. After getting around 5 dollars twice, you ...
43
votes
66answers
5k views

Blinking twelve

Many electronic devices, specially old ones, will show a blinking 12:00 when the time has not been set. The purpose of this challenge is to recreate this. ...
42
votes
29answers
6k views

Nth term of Van Eck Sequence

Output the Nth term of the Van Eck Sequence. Van Eck Sequence is defined as: Starts with 0. If the last term is the first occurrence of that term the next term is 0. If the last term has occurred ...
42
votes
2answers
2k views

Prison Architect, ASCII version

Here is a diagram of a prison using ASCII characters: ...

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