[Solved] Identify the error in this Ruby regex:/[a-z{3,5}]/ — Ans: Curly braces are inside character class incorrectly | Ruby

Ruby - Regular Expressions

Identify the error in this Ruby regex:

/[a-z{3,5}]/

AMissing escape for curly braces

BCurly braces are inside character class incorrectly

CRange a-z is invalid

DNo error, regex is correct

Step-by-Step Solution

Solution:

Step 1: Understand quantifiers and character classes
Curly braces {3,5} are quantifiers and should be outside character classes []. Inside [] they are treated as literal characters.
Step 2: Identify the error in placement
Putting {3,5} inside [] is incorrect syntax. It should be /[a-z]{3,5}/ to match 3 to 5 lowercase letters.
Final Answer:
Curly braces quantifier is incorrectly placed inside character class -> Option B
Quick Check:
Quantifiers go outside [] in regex [OK]

Quick Trick: Quantifiers like {3,5} must be outside character classes [OK]

Common Mistakes:

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