Ruby - Arrays
What will be the output of this Ruby code?
arr = [100, 200, 300]
puts arr.first(2).join('-')What will be the output of this Ruby code?
medium📝 Predict Output Q5 of 15
Step-by-Step Solution
Solution:
Step 1: Understand arr.first(2)
arr.first(2) returns an array of the first two elements: [100, 200].Step 2: Join the elements with '-'
Joining [100, 200] with '-' produces the string '100-200'.Final Answer:
100-200 -> Option BQuick Check:
arr.first(2).join('-') = '100-200' [OK]
Quick Trick: arr.first(n) returns first n elements as array [OK]
Common Mistakes:
- Thinking arr.first(2) returns single element
- Expecting join to cause error
- Confusing arr.first with arr.last
Master "Arrays" in Ruby
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Ruby Quizzes