Ruby - Loops and Iteration
What is the output of this Ruby code?
numbers = [1, 2, 3]
numbers.each { |n| puts n * 2 }What is the output of this Ruby code?
medium📝 Predict Output Q4 of 15
Step-by-Step Solution
Solution:
Step 1: Understand the block operation
The block multiplies each element by 2 and prints it.Step 2: Trace the output line by line
For 1, prints 2; for 2, prints 4; for 3, prints 6, each on a new line.Final Answer:
2\n4\n6 -> Option AQuick Check:
Block prints doubled values line by line [OK]
Quick Trick: puts prints each value on a new line [OK]
Common Mistakes:
- Expecting array output instead of printed lines
- Confusing puts with return value
- Ignoring multiplication inside block
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