There is a virus inside a recipient of 5x5. As we know how it propagates its contamination, your mission is to output the last stage of the contamination.
The recipient
It will be representend as a two dimensional array of 5x5:
0 0 0 0 1
0 0 0 0 1
0 0 0 1 1
0 0 1 1 1
0 1 1 1 1
Where 1 means ...
Background
The parity of a permutation, as defined by wikipedia, is as follows:
The sign or signature of a permutation σ is denoted sgn(σ) and defined as +1 if σ is even and −1 if σ is odd.
The sign of a permutation can be explicitly expressed as
sgn(σ) = (−1)^N(σ)
where N(σ) ...
Since this is basically talking about a cellular automaton I give you..
Golly Quicklife rule, 8 bytes
01234/2V
Input the rule, paste the grid into Golly, run pattern. The resulting pattern is the output.
Explanation:
01234 Survive on any number of neighbors
/2 Born on 2 neighbors
...
VHSIC (Very High Speed Integrated Circuit) was a 1980s U.S. government program. The program's mission was to research and develop very high speed integrated circuits.
The United States Department of Defense launched the VHSIC program in 1980 as a joint tri-service (Army/Navy/Air Force) program. The program led to advances in integrated circuit materials, lithography, packaging, testing, and algorithms, and created numerous computer-aided design tools. A well-known part of the program's contribution is VHDL, a hardware description language. The program also redirected the military's interest in...
This is a code-golf question.
Given integers s and n the task is to output all arrays of length n which take values from -s to s. The only twist is that you must output them in the following order.
The all zeros array of length n.
All arrays of length n with elements from -1 to 1 excluding a...
Are bug hunts like this allowed?
Bug Hunt - Make a change in a Git repo that Git cannot detect
Challenge: In the working directory of a Git repo, make a change that Git cannot detect.
Changes can be on any file in the working directory or subdirectories that is tracked by Git.
You may use any...
Maximum of Two Roman Numerals
You should write a program or function which returns the maximum of two Roman numerals.
Input
Two positive integers between 1 and 3999 (inclusive) with their Roman numeral representation string.
The two strings can be separated by a space or inputted in the stand...
Please note that this question is different from this question. This one asks for graphical output, while the other one asks for ascii art.
Objective
Help! Timmy's graphing calculator broke! His calculator cannot graph anymore. However, he has found a way to add new programs and functions to hi...
A Compose key, also called Multi key, is a part of the computer keyboard that is—or behaves like—a kind of special dead key. Thus, unlike a modifier key, which must be held down, the Compose key can be released before the following key stroke. The effect of the Compose key is to convert to a dead key every specified key that is pressed after it. The next (or even a later) keypress triggers the insertion of an alternate character, typically a precomposed character or a symbol.
== Key details ==
=== On the keyboard ===
Being a dead key, the Compose key only needs one key position. This is...
22
Jelly is a tacit, golf-oriented programming language by our very own Dennis. It’s popping up in answers here more and more often, beating other golf-y languages like Pyth and CJam, both by using its own code page and its powerful chain system to succinctly express programs.
Let’s collect some us...
Match things like:
foo()
bar() //hello;
printf("Invalid code >:D\n") /*hello;*/
bacon(99999) /* prints 'bacon'
99999 times.*/
Don't match things like:
foo();
bar() ; //hello
printf("Valid code :)\n") ; /*42*/
bacon(9999999999); /* prints 'bacon'
...
