Number of distinct tribone tilings fastest-code sequence hexagonal-grid tiling
Background
Consider the region \$T(n)\$ consisting of a triangular array of \$\frac{n(n+1)}{2}\$ unit regular hexagons:
Let's call \$T(2)\$ a tribone.
John Conway proved that \$n = 12k + 0,2,9,11\$ if and only if...
1
As input you will receive
An integer \$a\$
A list of integers that is infinite and strictly-monotonic1.
Your program should check in finite time if \$a\$ appears the list.
You should output one of two disctinct values. One if \$a\$ appears in the list and the other if \$a\$ does not.
This ...
Check equality between infinite lists code-golf decision-problem
As input you will receive
Two lists of integers that is infinite and strictly-monotonic1.
Your program should check in finite time if the two lists are equal.
You should output one of two disctinct values. One if \$a\$ appear...
Mow The Grass code-golfstring
Context
After attempting to program in Grass for the entire morning, you decide to go outside and mow some real grass. The grass can be viewed as a string consisting exclusively of the following characters: wWv. w denotes tall grass which takes \$ 1 \$ unit of ener...2
With this challenge we pay homage to everyone around the whole world fighting against the coronavirus crisis; particularly represented are the people tied to medicine, as the Rod of Asclepius is a symbol associated with medicine and health care.
For that matter, we resort to some ASCII art found...
I feel like we may have enough data on this site to meaningfully break programming languages into classes.
What I mean by classes is akin to Go's ranking system:
If a player can win 90% of even games against a 2 kyu player, the AGA believes he or she is 1.33 ranks higher, the EGF believes (s...
Inspired by This answer to a Puzzling question
Background - exponentiation by squaring
If you don't want to read the background, or don't understand it, there's a worked example in Java, linked at the bottom of the post.
\$a^{2^{x+1}} = a^{2^{x}} * a^{2^{x}}\$
Therefore to find \$a^b\$ (where ...
Your task is to get two numbers, and output the digit sum of them. We'll define digit sum as the following:
take the decimal (base 10) digits of each of them, and pad with 0s the shortest number (e.g. [1,9], [0, 7])
sum the digits as vectors (e.g. [1, 16])
convert the number back from base 19, ...0
Given an expression (t1 & t2)*(t3 & t2), within a given range for t2, how to maximize the expression? (& is bitwise and) t1,t2,t3 are non negative integers.
Well after so many handwritten examples, I build the logic that first finds the maximum of t1 and t3 and then found the set bits of the max...
This might be a very basic question in terms of math,
x % constant = x_modulus
(x + some_number) % constant = y_modulus
Given the value of x_modulus, y_modulus, (x + some_number) and constant(common in both), output the value of x itself based on these values.
Russian roulette
It's Russian roulette! The rules are simple. Shoot a revolver with n slots for bullets and one round inside at your head and you might not die!
Task:
Make a program that takes integer n (you can assume that 10<=n<=128) as input and outputs nothing.
but how do I tell if I'm...
