You may assume all elements in the array are greater then 0. Here is what to do: You will first look at the element at index 0. [2,1,4,5,3,1,8,20,2,4] The element is a 2. This means that you will print every 2nd index -- assume indexes start at 0 [1,3,8,2] (index 2,4,6,8) You will stop pri...

How generating a unique nonce and creating a hash value lesser than the target value validates a block.I have searched so many articles still cant find a better answer for this .Can someone explain this.

Type the Alphabet Your task is to make a program that measures how fast you can type the letters of the English alphabet. The program will only accept lowercase letters a to z in the alphabetical order. Each letter is echoed on the same line. If you type an invalid letter the program shall o...

The shortest distance between two points is a line code-golf geometry (we should maybe have a tag for interactive?) Code a program or function to construct an interactive canvas on the screen of at least 400 pixels x 400 pixels in size. The user will click on two distinct areas of the canvas, a...

When two (or more) distinct values are asked as 'boolean' input, you cannot input complete or partial functions When I create a challenge and ask for a boolean or two 'consistent and distinct values' I mean it in the sense of a truthy and falsey value. Usually I leave the choice to the ones doin...

Last I checked, one did not need a diamond in their name to post questions tagged kolmogorov-complexity. I also didn't know that main site tags could be mods-only. Oddly enough, when I'm in the editor it doesn't happen.

Does it have a square? (simple version) code-golf matrix Given a matrix of 0s and 1s, determine if there are 4 points that are 1 and are the corners of a square. Here's an example to clarify, with a possible square (in bold):0 0 0 0 0 0 0 1 0 0 0 1 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 1 0 1 0 0 1 0 0 ...

Tear Down that Wall cops-and-robbers ascii-art Related (dupe?) This is my first time submitting a cops-and-robbers challenge. Suggestions and constructive criticism are always welcome. Cops: As the cop, your task is to create a code that outputs this ASCII wall: ___|___|___|___|___|___|__...

Assume i have 8*8 square, what is symbol to get all index of illegal squares? Illegal square is: all squares on the same column, row and next diagonal square. The illegal square on this simulation would be square 1 , column 2 (all square in the column), row 2(all squares in the row) and squar...

Perfect Squares Without Borders Given n=m^2, return a list of numbers that do not border the m x m grid of numbers from 1 to n. Examples n=1 (m=1) Grid: [1] Return: [] n=4 (m=2) Grid: [1,2] [3,4] Return: [] n=9 (m=3) Grid: [1,2,3] [4,5,6] [7,8,9] Return: [5] n=16 (m=4) Gr...

The Illuminati commands you (with their mind control) to output the following string: ^ /_\ /_|_\ /_|_|_\ /_|/o\|_\ /_|_\_/_|_\ /_|_|_|_|_|_\ /_|_|_|_|_|_|_\ /_|_|_|_|_|_|_|_\ /_|_|_|_|_|_|_|_|_\ Rules: Trailing spaces are allowed for each line. L...

Background SmileBASIC is a BASIC interpreter for the Nintendo 3DS. Like most versions of BASIC, there is a PRINT command which displays text in the console. (As well as ? which does the same thing) By default, PRINT moves the cursor to the next row after printing, and this can be disabled by p...

Does the Riemann hypothesis hold? number-theory code-golf math I would like to earn a million dollars, and the hardest way to do it is apparently solving one of the Millenium problems, so let's focus on one: the Riemann hypothesis. Now, how could I possibly ever solve it? By writing a computer...

Sort an Option String Background In C, there is a function to help parse command-line arguments: getopt. Getopt takes the argument count (argc), the argument list (argv), and a string representing the options the program should take (optstring). The option string (optstring) is a series of op...