FastPrepUniversal Exit Command Sequence

Universal Exit Command Sequence

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Problem statement

A rectangular maze uses # for walls, . for passable cells that may be the unknown start, and exactly one E exit. You must choose one fixed command string over U, D, L, and R.

The problem statement continues
Pro

Examples

Example 1

grid = ["..E"]return = "RR"

Two right moves merge and then exit both possible starts.

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FastPrep Pro
Reported in 1 Google interview this week

Unlock this recently reported problem

FastPrep Pro gives you full access to interview problems reported within the last week.

  • Full problem statement and constraints
  • 1 more worked example, explained
  • Guided hints and editorial
  • Run your code on real test cases
$8.25/month

$99 billed yearly — or $19 month-to-month. Cancel anytime.

Free plan — 2 of 2 free unlocks used this week