Ruby - Arrays
What will be the output of the following Ruby code?
a = [5, 6, 7] b = [7, 8, 9] result = a | b puts result.inspect
What will be the output of the following Ruby code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the '|' operator
The '|' operator returns the union of two arrays, combining unique elements from both.Step 2: Apply to given arrays
Arraysaandbare combined without duplicates: [5, 6, 7, 8, 9].Final Answer:
[5, 6, 7, 8, 9] -> Option BQuick Check:
Union operator '|' merges unique elements [OK]
Quick Trick: Use '|' for union of arrays without duplicates [OK]
Common Mistakes:
- Expecting duplicates in the union result
- Confusing '|' with concatenation '+'
- Assuming '&' returns union instead of intersection
Master "Arrays" in Ruby
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