Ordered Character Check

A easy Python interview practice problem on DataDriven. Write and execute real python code with instant grading.

Domain

Python

Difficulty

easy

Seniority

L6

Problem

Given a string containing only 'A' and 'B' characters, return True if every A comes before every B (once a B appears, no A follows). Empty string returns True.

Summary

Check if all As appear before all Bs.

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