Ruby - String Operations
What is the output of this Ruby code?
str = "programming" puts str[-4, 3]
What is the output of this Ruby code?
medium📝 Predict Output Q13 of 15
Step-by-Step Solution
Solution:
Step 1: Understand negative indexing and slicing
Negative index -4 means counting from the end: 'g'( -1), 'n'( -2), 'i'( -3), 'm'( -4). So index -4 points to 'm'.Step 2: Extract substring starting at 'm' with length 3
From 'm' take 3 characters: 'm', 'i', 'n' forming 'min'.Final Answer:
min -> Option DQuick Check:
str[-4,3] = 'min' [OK]
Quick Trick: Negative index counts from end; length slices forward [OK]
Common Mistakes:
- Confusing negative index position
- Using range instead of start,length
- Off-by-one errors in slicing length
Master "String Operations" in Ruby
Want More Practice?
15+ quiz questions · All difficulty levels · Free
Free Signup - Practice All QuestionsMore Ruby Quizzes