You are to write a program or function that outputs this exact text:
OPQRSTU
NQPONMV
MREDCLW
LSFABKX
KTGHIJY
JUVWXYZA
IHGFEDCB
May also be lowercase.
Standard loopholes are disallowed
This is code-golf, so smallest byte count wins.
Also, why isn't there an alphabet tag yet?
Integers are tedious to represent in Brain-Flak. There are 8 operators:
() Evaluates to 1, but does not push anything on any stack
[] Evaluates to an indeterminate value for the purposes of this question
{} Removes the top of the stack and evaluates to it
<> Switches to or ba...
Say $X_1, X_2, \ldots, X_n$ are independent and identically distributed uniform random variables on the interval $(0,1)$.
What is the product distribution of two of such random variables, e.g.,
$Z_2 = X_1 \cdot X_2$?
What if there are 3; $Z_3 = X_1 \cdot X_2 \cdot X_3$?
What if there are $n$ o...
The Challenge
Your challenge is to write a program that evaluates the following function:
f(x, t) = d^x / dt^x (sin t)
That is, the x-th derivative of sin t. In case you aren't familiar with calculus, here is a table of derivatives for the sine function:
...
d^-1 / dt^-1 (sin t) = -cos t
d^...
Fourier, 143 141 bytes
Not a particularly interesting answer except that it stores newlines (ASCII code 10) as the variable T... Uses isaacg's golfing program.
79a^a^a^a^a^a^a10a~T78a81avavavava86aTa77a82a69avava76a87aTa76a83a70a65a^a75a88aTa75a84a71a^a^a^a89a10a74a85a^a^a^a^a^a65aTa73avavavava...
The interpreter(/compiler) defines the language
A spec is not a language. For the purposes of PPCG, a programming language is defined by its implementation.
If the interpreter is fixed after the challenge is posted, the answer must be marked as non-competing—just like any other answer in a lang...
Creating a new compiler for a language after a challenge was posted
There is some debate arising from this answer. He created his own compiler for the C programming language that extends the language specifications. It seems pretty obvious that this will be declared a loophole, to me at least, b...
Always— but a REPL is a different language.
We usually define languages by their interpreters. My Python shell is an interpreter, which satisfies our definition of a programming language. Therefore, it is a valid language.
"Wait a minute", you say, "won't REPLs usually be shorter than their ful...
Python, 22 bytes
lambda N:N-1&1-N>N**.5
This is a port of my Jelly answer. Test it on Ideone.
How it works
Let j be a strictly positive integer. j + 1 toggles all trailing set bits of j and the adjacent unset bit. For example, 100112 + 1 = 101002.
Since ~j = -(j + 1) = -j - 1, -j = ~j + 1...
The task is very simple, when given an input, output one of the following spirals:
Input = 1 gives a spiral with the letter A beginning in the top left corner:
A B C D E F
T U V W X G
S 5 6 7 Y H
R 4 9 8 Z I
Q 3 2 1 0 J
P O N M L K
Input = 2 gives a spiral with the letter A beginning in the t...
