Radar Field
A radar field marks nearby mines with numeric pings. Given a completed rectangular grid of spaces and asterisks, count how many mines touch each empty cell horizontally, vertically, or diagonally, and return the annotated grid.
Starter code and a visible test file ship in the repo.
The full README and the hidden test suite are available once you open the byte in your CodeSubmit workspace. Candidates never see the hidden tests.
Standard engineering judgment. Multiple edge cases worth handling.
More Java bytes
JavaYour task is to convert a signal code number into a string of beacon alert patterns.
JavaYour task is to convert an alert code number into a string of alarm chime sounds.
JavaThe archive code verification process is used to validate catalog identifiers. These usually contain dashes and look like: 3-598-21508-8.
JavaConvert a number, represented as a sequence of digits in one base, to another base by following a base trail.
JavaA maintenance beacon board spells out numbers using a 3 x 4 grid of pipes, underscores, and spaces. Decode the digits, preserve any unreadable glyphs as ?, and join multiple rows with commas.
JavaTrack a signal beacon that awards points based on how close a shot lands to the center of a circular target.