[Solved] Identify the error in the following Ruby code: arr = [1, 2, 3, 4, 5] slice = arr[3..1] puts slice.inspect | Ruby

Ruby - Arrays

Identify the error in the following Ruby code:

arr = [1, 2, 3, 4, 5]
slice = arr[3..1]
puts slice.inspect

AThe range 3..1 is invalid and returns nil

BThe code raises a runtime error

CThe range 3..1 returns an empty array

DThe code returns elements from index 3 to 1

Step-by-Step Solution

Solution:

Step 1: Analyze the range 3..1
The start index 3 is greater than the end index 1, so the range is empty.
Step 2: Check Ruby behavior for empty ranges in slicing
Ruby returns an empty array when the range is empty.
Final Answer:
The range 3..1 returns an empty array -> Option C
Quick Check:
Invalid range returns empty array, not nil or error [OK]

Quick Trick: Ranges with start > end return empty array in slicing [OK]

Common Mistakes:

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