Given arr = [2, 4, 6, 8, 10, 12], write a Ruby expression to get every element from index 1 to 4 inclusive, then reverse that slice.

hard📝 Application Q8 of 15

Ruby - Arrays

Given arr = [2, 4, 6, 8, 10, 12], write a Ruby expression to get every element from index 1 to 4 inclusive, then reverse that slice.

Aarr[0..4].reverse

Barr[1...4].reverse

Carr[1..5].reverse

Darr[1..4].reverse

Step-by-Step Solution

Solution:

Step 1: Identify the slice indices
Indices 1 to 4 inclusive means elements at indices 1, 2, 3, and 4.
Step 2: Slice and reverse the array
Use arr[1..4] to get the slice, then call .reverse to reverse it.
Final Answer:
arr[1..4].reverse -> Option D
Quick Check:
Use .. for inclusive range and .reverse to reverse slice [OK]

Quick Trick: Use .. for inclusive range and .reverse to reverse slice [OK]

Common Mistakes:

MISTAKES

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