Ruby - Arrays
Which operator in Ruby returns the common elements between two arrays?
[1, 2, 3] ? [2, 3, 4]Which operator in Ruby returns the common elements between two arrays?[1, 2, 3] ? [2, 3, 4]
easy📝 Conceptual Q11 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the operators
The&operator returns elements common to both arrays.Step 2: Apply to example arrays
For arrays [1, 2, 3] and [2, 3, 4], common elements are 2 and 3.Final Answer:
& (intersection) -> Option AQuick Check:
Common elements = & [OK]
Quick Trick: Use & for common items between arrays [OK]
Common Mistakes:
- Confusing union (|) with intersection (&)
- Using - for common elements
- Thinking == compares elements regardless of order
Master "Arrays" in Ruby
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