Grid Simulations

A few Anduril interviewers have asked candidates to build a small game on a grid, sometimes right after a run of quick C++ questions and sometimes in a senior loop. There's no trick in any of them. They check whether you can model a board and keep the rules straight as the game grows.

Start each one by fixing the model. Decide how the board is stored, what a move takes as input, and what the function returns. Then write the rule for one step, and check that every cell reads the state it should.

The Anduril angle

Anduril's autonomy code runs a similar loop. It keeps a picture of the world, checks a planned move against it, then updates it once per tick, which is why a small game fits the round. Keep the check, the update and the output in separate functions. When the interviewer adds rotation, scoring or a bigger board, you only change one of them. Point out which cells sit on the edge before you code, because most of the bugs in these problems show up there.

AndurilPremium lesson · Coding round

The 3 Anduril problems are below.

1. 1A Premium questionCoding · Medium
2. 2A Premium questionCoding · Medium
3. 3A Premium questionCoding · Medium

Each with hints, the follow-up and a tested solution.

Get the Anduril questions

$49 a year · all 100 companies · cancel anytime

From 20,000+ candidate reports, forum threads behind logins and write-ups in Chinese.

Read a free Anduril lesson firstAlready a member? Sign in