Interview guides / android

Longest Substring Without Repeating: Android Interview Question

Longest Substring Without Repeating interview question with a clear example answer for Android engineers. Practice with AceMobileInterview.

This is a common Android interview topic: Longest Substring Without Repeating.

Below is a concise answer you can adapt in a real interview, then go deeper in the full AceMobileInterview track.

1. 1.Longest substring without repeat characters.

   Sliding window + lastSeen map. O(n).