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CoursesGoogle Coding Interview

Spiral Matrix

Read a matrix in spiral order — around the outside and inward ring by ring.

Lessons
9
Exercises
31
Minutes
43
  1. 1

    Decode the Problem

    Multiple choice
    3 exercises
    4 min
  2. 2

    Approach Check

    Multiple choice
    4 exercises
    4 min
  3. 3

    Build the Brute Force

    Multiple choiceTrace
    3 exercises
    5 min
  4. 4

    Find the Bottleneck

    Multiple choice
    2 exercises
    4 min
  5. 5

    Discover the Optimal Approach

    Multiple choice
    3 exercises
    4 min
  6. 6

    Assemble the Algorithm

    Code order
    2 exercises
    5 min
  7. 7

    Read the Implementation

    Complete codeMultiple choice
    3 exercises
    5 min
  8. 8

    Test and Analyze

    Multiple choice
    3 exercises
    4 min
  9. 9

    Boss BattleBoss

    Complete codeDebugCode orderMultiple choiceTapTrace
    8 exercises
    8 min
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