Android Fundamentals Coding Round | Dataford Interview Questions

Tell me about a coding problem you solved where strong problem-solving skills and solid Android fundamentals were required. As a hands-on follow-up, validate whether an Android Activity callback sequence follows legal lifecycle transitions. Implement is_valid_activity_lifecycle(events), which accepts a list of callback names and returns a boolean.

Constraints

1 <= events.length <= 10^4
Each event is a string callback name
Valid callback names are onCreate, onStart, onResume, onPause, onStop, onRestart, and onDestroy
The sequence must begin with onCreate
onDestroy is terminal

Function Signature

def is_valid_activity_lifecycle(events):

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Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.

Problem

Constraints

1 <= events.length <= 10^4
Each event is a string callback name
Valid callback names are onCreate, onStart, onResume, onPause, onStop, onRestart, and onDestroy
The sequence must begin with onCreate
onDestroy is terminal

Function Signature

def is_valid_activity_lifecycle(events):

Your question is Android Fundamentals Coding Round. Start with the requirements in the Question tab.

Run and submit as often as you like. When you're ready, talk me through your approach or go straight to the code.