# All Questions

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### Make Gimbap cutter

Gimbap(김밥) is Korean food, somewhat looks like sushi roll. Here is Korean emoticon represent Gimbap : @)))))))))) Your quest is make ASCII Gimbap cutter. Rule ...
4k views

### ASCII Meme Arrow Generator

Specifications Given a number n, output an ASCII "meme arrow" (greater-than symbol, >) of size ...
155 views

### Find 77 7-letter Magic Words [closed]

A magic word is a word whose Braille spelling contains precisely 26 dots (because the Morse code alphabet can be circularly encoded within). For example: ...
189 views

### Insert commas into numbers [closed]

Write a program that reads a string, and inserts commas to divide large numbers in groups of 3. i.e. 10000 => 10,000. It should 'fix' incorrectly formatted numbers as described below. It must work ...
115 views

### Shortest Gomoku (5 in a row) implementation [closed]

I suspect Gomoku may be one of the simplest games to implement in code. https://en.wikipedia.org/wiki/Gomoku The game is this: players BLACK and WHITE take turns putting down black and white stones. ...
8k views

### Proving that a Russian cryptographic standard is too structured

The aim of this challenge is to find an impossibly short implementation of the following function p, in the langage of your choosing. Here is C code implementing it ...
190 views

### Implement the EnScript CHS command [closed]

JonoCode9374 had almost completely implemented my language EnScript except for the CHS command. I was impatient of waiting for them to implement this command, so I chose to put this question here. ...
77 views

### Generating edge cases in programming puzzles [closed]

Not exactly sure if it belongs in this site, but I always have trouble thinking of all the certain edge cases in any kind of competitive programming or puzzles. For example, take this kind of ...
209 views

### Multiplication in the Steenrod Algebra

Here's yet another Steenrod algebra question. Summary of the algorithm: I have a procedure that replaces a list of positive integers with a list of lists of positive integers. You need to repeatedly ...
3k views

### Who won a Game of Bar Dice?

Challenge Bar Dice is a simple game played in a Bar with Dice (hence the name). You roll 5 six-sided dice and attempt to make the best hand. Scoring is based on amassing the largest number of ...
271 views

### Manhattan Directions Code Golf

This code golf challenge is to show directions through numbers. When the user enters a number, then that means a direction change as follows: ...
1k views

### Generate basis elements of the Steenrod algebra

The Steenrod algebra is an important algebra that comes up in algebraic topology. The Steenrod algebra is generated by operators called "Steenrod squares," one exists for each positive integer i. ...
855 views

### Group Integers by Originality

Introduction: I collect twisty puzzles. Most twisty puzzles are produced and sold by Chinese companies. Most well-known companies ask permission from puzzle designers to produce their designs and ...
259 views

### Self-displaying image [closed]

Background There are self-extracting .ZIP files. Typically they have the extension .EXE (and by executing the file they will be ...
2k views

### Overlapping String-Blocks

Challenge: Given a list of multi-line strings, overlap them (in the top-left) and output the result. Example: Input: ["aaaa\naaaa\naaaa\naaaa","bb\nbb\nbb","c"] ...
2k views

### Generate a Graeco-Latin square

disclaimer: I'm not aware of any non-bruteforce solutions A Graeco-Latin square is, for two sets of same length $n$, a $n \times n$ arrangement of cells, each containing a unique (across the ...
86 views

### Finding row wise sum of transpose of hv-convex binary matrix [closed]

I'm stuck on a problem involving the Gale-Ryser Theorem. The problem's input gives me the row-wise sum of an hv-convex binary matrix(n*m). ...