Background:
Standard operation math like basic addition and multiplication in the real world work like these:
12 + 123 = 135
and
12 * 123 = 1476
That's not interesting! Many schools are already interpreting this as practice, practice, practice of formal algorithms. That implies a pretty ri...
In the movie Inception we see the main star using a totem to check if he's in the real world or dreaming.
You seem to have misplaced your own totem, so you quickly draw inspiration from this movie and create your own spinning totem!
For this challenge, you take an input of several palindrome st...
Smallest palindrome divisible by the input
Given a positive integer N, output the smallest positive integer such that this number is a palindrome (i.e. is its own reverse) and is divisible by N.
We assume here that N will never end in 0, to avoid deciding whether 010 is valid for N = 10 or not....
To prevent people from being killed by velociraptors.
Unless you are programming in assembler, GOTO should always be treated the same way as the life vest of the airplanes: it is good to have them available, but if you need to use them it means that you are in big trouble.
Task
Given a piece of compilable, valid and pretty printed code from your language of choice, remove all redundant characters from it so that it still functions exactly as it did before, but will, of course, take up less space.
Example, Java, 42 bytes
int add(int a, int b) {
return a + b;
...
Don't listen to these guys. You actually can parse context-free grammars with regex if you break the task into smaller pieces. You can generate the correct pattern with a script that does each of these in order:
Solve the Halting Problem.
Square a circle (simulate the "ruler and compass" metho...
PokemonGoCalculatorian, 0 bytes.
In PokemonGoCalculatorian, all programs implement the function you describe.
Highlight the Bounding Box
code-golfascii-artgrid
You're given a rectangular grid of the characters . and #, like this:
..........
..#.......
....#..#..
...#......
..........
Your task is to fill the entire axis-aligned bounding box of the # with further #:
..........
..######..
..######..
...
A sorted array contains all even numbers from 2 to 256. For fun, let’s assume that you don’t know that there are only even numbers in that array and how elements are distributed. But you do know the number of elements and that the array is sorted. In order to determine if the number 45 is in the ...
(related: one, two, three)
An acrostic is a style of poem/writing where the beginning character of each line, when read vertically, also produces a word or message. For example,
Together
Everyone
Achieves
More
also spells out the word TEAM when the first column is read vertically.
Acrostics ...
