# Tag Info

### Sandbox for Proposed Challenges

Complete an equivalence relation In set theory, a relation from a set $A$ to a set $B$ is a set of pairs of elements from $A$ and $B$. For example, $\{(1, 5), (1, 6), (2, 4), (3, 5)\}$ is a ...

### Sandbox for Proposed Challenges

Interpret a Turing Complete (strict) Subset of your Language Write a program which can interpret some programs exactly the same way as your language, where these can be used to model any computation. ...

### Sandbox for Proposed Challenges

I (rev)?(pal)? the source code, you (rev)?(pal)? the input!
1 vote

### Sandbox for Proposed Challenges

Barbrack Your task is to write a program or function that takes a non-negative integer (in decimal or any other convenient base for your language) and output a number in the numbering system Barbrack. ...
1 vote

### Sandbox for Proposed Challenges

Given A Binary String, Determine Which Of Certain Substrings Are Equal And Opposite yea the title is going to need some work Concept Take an even length binary string ...

### Sandbox for Proposed Challenges

Execute... yourself! Almost a duplicate, but only requires you to compile a subset, and is closed. You work at a compiler factory, making compilers tailored to your customers. Challenge In a ...

### Sandbox for Proposed Challenges

Print the answer before a given answer code-golf answer-chaining quine In this challenge, you'll take an answer as input, and print the answer before it. If the answer passed as input is the first ...
1 vote

### Sandbox for Proposed Challenges

Fastest decimal to binary binary base-conversion fastest-code number Same challenge, but code golf Given a decimal number, your task is to convert it to binary. Test cases ...

### Sandbox for Proposed Challenges

Find the k-th largest number Given the string representation of three sorted lists, get the k-th largest number. The string representation has such form: ...

### Sandbox for Proposed Challenges

Add two rational numbers... esoterically Objective Build a binary operator $\star : \mathbb{Z} \times \mathbb{Z} \to \mathbb{Z}$ such that, there exists a bijection $i : \mathbb{Z} \to \mathbb{Q}$ ...

Implement Subleq

### Sandbox for Proposed Challenges

Find an eigenvalue of a 3x3 Matrix Write a program of function that given a 3x3 matrix as input outputs an Eigenvalue of that matrix Examples/Test-cases: ...

### Sandbox for Proposed Challenges

really shitty sloppy wip but i just want to start this post so that i can be past the first hurdle next time i look at this. feel free to ask anything just know this is like step 0; implement this ...

### Sandbox for Proposed Challenges

Do you win a Numeric Mahjong?

### Sandbox for Proposed Challenges

The multiples are missing code-golf integer sequence Given a number $n$, you are to compute the sequence of positive numbers where for each number $a$, the $n$-times multiple $n\cdot a$ is ...

### Sandbox for Proposed Challenges

Roll a ball down an array You are in a frictionless environment in a vacuum. Obligatory XKCD You are given a inertialess, sizeless point mass which you have to roll down a slope. The ball starts with ...

### Sandbox for Proposed Challenges

Tamagochi code-golf I can't believe there has never been a Tamagochi challenge on code golf! Edit: There has never been a Tamagochi challenge, but there was a Tamagotchi, whatever that is. Rules: ...

### Sandbox for Proposed Challenges

Numbers with distinct decimal digits

### Sandbox for Proposed Challenges

Digits of Infinity (computing A206636) code-golfmath In this PDF, https://www.vixra.org outlines a way to find the last $n$1, 3 digits of infinity and a method to do so. Let us define the infinity ...

### Sandbox for Proposed Challenges

Calculate NDos-size of given integer Objective Given a nonnegative integer, calculate its NDos-size as defined below, and output it. NDos' numeral system The concept of NDos-size comes from the ...

### Sandbox for Proposed Challenges

Find the largest sum such that no two elements are touching

Sokobunny I

### Sandbox for Proposed Challenges

Build the smallest self driving Car code-golf Your goal is building the smallest self driving car to get from A to B. The car is ...

### Sandbox for Proposed Challenges

Play a game of memory

### Sandbox for Proposed Challenges

Unique String Deletions You are given a string s, where s.length <= 42, and an integer k, ...

### Sandbox for Proposed Challenges

Simulate Feedback Scheduling on a Uniprocessor Alternatively, exploiting university course content for code golf reputation Like round robin scheduling, Feedback Scheduling is a way to schedule ready ...

### Sandbox for Proposed Challenges

How sorted is this array Given an array output the minimum number of swaps needed to sort that array Examples ...

### Sandbox for Proposed Challenges

Sums of sum of divisors in sublinear time

### Sandbox for Proposed Challenges

Return every possible program with positive probability Write a program or function a (subset of a) Program language of your choice that returns every possible Program in the same Language with a ...

### Sandbox for Proposed Challenges

How many ways to cut a number into an equation?

### Sandbox for Proposed Challenges

BB⁻¹(TREE(3)) Construct a Turing machine with tape alphabet {0, 1} that, starting on a tape filled with 0, it halts with at least TREE(3) 1's. Least states wins. Notes As math scat mentioned, this is ...

### Sandbox for Proposed Challenges

Sum of consecutive nth powers code-golf math integer

### Sandbox for Proposed Challenges

The Legend of Koth Episode 1: WANTED Alright. The WumpusWars project turned out to be more than I can swallow, so I had to give it up. If you're interested in hosting the competition yourself go ahead:...

### Sandbox for Proposed Challenges

What's my score? The question score on Stack Exchange is the total number of upvotes minus the total number of downvotes a question receives. However, the reputation gained/lost for every upvote/...
1 vote

### Sandbox for Proposed Challenges

Simulate Round Robin Scheduling

### Sandbox for Proposed Challenges

Median of Chi-Square Output the IEEE-754 single-precision floating-point number represented by the following binary decomposition: ...

### Sandbox for Proposed Challenges

Volume of a squaricililinder Inspired by an interestingly-shaped glass at a cafe. WHAT THE HECK IS A SQUARICILILINDER!?!?! A squaricililinder is a prism with a square at one end and a circle at the ...

### Sandbox for Proposed Challenges

There's more than one way to do it cops-and-robbers Cops: Pick a freely available programming language, and pick a function on the integers (i.e. given one integer as input, it produces one integer as ...

### Sandbox for Proposed Challenges

Pseudo-Quantum Bogosort Quantum Bogosort is as follows: Quantumly randomise the list, such that there is no way of knowing what order the list is in until it is observed. This will divide the ...

### Sandbox for Proposed Challenges

Be big more often

### Sandbox for Proposed Challenges

A robber flipped some bits. This is what happened to the cop's code. cops-and-robbers Objective Cops shall pose a code that outputs a truthy or falsy value deterministically, depending on the input. ...
1 vote

### Sandbox for Proposed Challenges

Implement RAID RAID, or Redundant Array of Independent Disks is a way to efficiently store data in such a way that if any one disk fails you can still recover the data. Instead of implementing the ...