You want to find all words starting with a or A in a string using a regex literal. Which regex literal correctly matches this requirement?

hard📝 Application Q15 of 15

Ruby - Regular Expressions

You want to find all words starting with a or A in a string using a regex literal. Which regex literal correctly matches this requirement?

A/\b[a]\w*/i

B/\b[A]\w*/

C/\b[a]\w*/

D/\b[a-z]\w*/i

Step-by-Step Solution

Solution:

Step 1: Understand the requirement
We want words starting with 'a' or 'A'. Using case-insensitive flag i simplifies matching both.
Step 2: Analyze options
/\b[a]\w*/i uses /\b[a]\w*/i which matches word boundary, then 'a' (case-insensitive), then zero or more word chars. This matches words starting with 'a' or 'A'.
Final Answer:
/\b[a]\w*/i -> Option A
Quick Check:
Use i flag to match both 'a' and 'A' easily [OK]

Quick Trick: Use /pattern/i to match letters ignoring case [OK]

Common Mistakes:

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