[Solved] What is the output of this Ruby code? arr = [10, 15, 20, 25] result = arr.reject { |x| x > 15 } puts result.inspect | Ruby

Ruby - Enumerable and Collection Processing

What is the output of this Ruby code?

arr = [10, 15, 20, 25]
result = arr.reject { |x| x > 15 }
puts result.inspect

A[]

B[10, 15]

C[10, 15, 20, 25]

D[20, 25]

Step-by-Step Solution

Solution:

Step 1: Analyze the reject block condition
The block rejects elements where x > 15 is true, so elements greater than 15 are removed.
Step 2: Identify remaining elements
Elements 20 and 25 are removed; 10 and 15 remain.
Final Answer:
[10, 15] -> Option B
Quick Check:
reject x > 15 = keep x ≤ 15 [OK]

Quick Trick: Reject removes elements where block is true [OK]

Common Mistakes:

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