Fixed Point of cos(x)
Fixed points are any such values where, given a function f, x = f(x) = f(f(x)) = . . .
There exists a "fixed point" for the cosine function, where x = cos(x) = cos(cos(x))= . . . (you may have unknowingly come across this by repeatedly pressing "cos" on a scientific calcul...
A065825 code-golf sequence arithmetic
(This is A065825.) The sequence defaults apply, so you can pick another format other than this one.
Given an input integer n, find the smallest number k so that there exists an n-item subset of {1,...,k} where no three items form an arithmetic progression.
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Background
Penney's game is a two-player game about coin tossing. Player A announces a sequence of heads and tails of length \$n\$, then player B selects a different sequence of same length. The winner is the one whose sequence appears first as a substring (consecutive subsequence) in repeated c...
A recent SO question asks for a convenient one-liner to generate a list of numbers and their negative counterparts in Python.
Given two integers \$1≤a≤b\$, generate all the integers \$x\$ such that \$a≤|x|≤b\$. The result may be printed or returned in any order or structure, as putting the resul...
A recent SO question asks for a convenient one-liner to generate a list of numbers and their negative counterparts in Python.
Given two integers \$1≤a≤b\$, generate all the integers \$x\$ such that \$a≤|x|≤b\$. The result may be printed or returned in any order or structure, as putting the resul...
I am learning via example code.
M = 4;
k = 2;
n = 30;
rng default;
dataIn = randi([0 1],n,1); % Generate vector of binary data
disp(dataIn)
dataInMatrix = reshape(dataIn,length(dataIn)/k,k);
disp(dataInMatrix)
dataSymbolsIn = bi2de(dataInMatrix);
disp(dataSymbolsIn)
I am getting incorrect ...
Challenge
Premise
Bob lost1 Alice's precious grand piano. Big mistake. Alice has now stolen Bob's low-orbit ion cannon.
Alice refuses to just make up with Bob, so let's help her give him a light tap on the roof. From the top Bob's house looks like a lattice polygon, where all points have integ...
Constellation Enumeration in Game of Life
Yet another trivial Conway's Game of Life challenge.
A stable constellation is a still life that is composed of two or more non-interacting objects.
You task is to take the valid object list, and output a list of all possible constellations. The object...
