Ruby - Arrays
What does the expression
arr[2..4] return when arr = [1, 2, 3, 4, 5, 6]?What does the expression arr[2..4] return when arr = [1, 2, 3, 4, 5, 6]?
easy📝 Conceptual Q1 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the range 2..4
The range 2..4 includes indices 2, 3, and 4.Step 2: Extract elements at indices 2, 3, and 4 from the array
Elements at these indices are 3, 4, and 5 respectively.Final Answer:
[3, 4, 5] -> Option CQuick Check:
Range 2..4 extracts elements at indices 2 to 4 inclusive = [3, 4, 5] [OK]
Quick Trick: Range with two dots includes the end index [OK]
Common Mistakes:
- Confusing .. with ... range operators
- Starting index from 1 instead of 0
- Expecting exclusive end index with ..
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