live-coding - GrindLoop: Android & iOS Interview Prep

Does Taking a Hint in a Coding Interview Count Against You?

October 9, 2026 by Hass

Two light bulbs on a table, one lit, for a post on taking a hint in a coding interview

A hint in a coding interview costs points by its size. How the hint ladder works, when to ask for help and a full script for asking and recovering.

Why a Listener That Removes Itself Throws ConcurrentModificationException

October 2, 2026 by Arsam

For loop in syntax-highlighted code on a dark screen, illustrating a listener loop that throws ConcurrentModificationException

Unregistering a listener inside its own callback throws ConcurrentModificationException or skips listeners. Why, JVM vs Android, and the snapshot fix.

Found the Bug in Your Android Debugging Interview and Still Didn’t Pass?

September 28, 2026 by Hass

Laptop showing a code editor next to a mobile emulator, the setup for an Android debugging interview

In an Android debugging interview, the first green test is often only the midpoint. What the bug squash round scores, and the traps that sink candidates who find the bug.

Why the Android Machine Coding Round Isn’t One Test, It’s Three

September 27, 2026September 23, 2026 by Hass

Close-up of code in a dark editor, the kind of work done in an Android machine coding round

The Android machine coding round comes in three formats: build from scratch, extend a codebase, and debug. What each one tests, and a scaffolding drill to run from an empty file.