Ruby - String Operations
Which of the following is the correct way to get the substring 'ell' from
str = "hello" using slicing?Which of the following is the correct way to get the substring 'ell' from str = "hello" using slicing?
easy📝 Syntax Q12 of 15
Step-by-Step Solution
Solution:
Step 1: Understand slicing syntax
In Ruby,str[start, length]extracts a substring starting atstartwithlengthcharacters.Step 2: Extract 'ell' from 'hello'
'ell' starts at index 1 and has length 3, sostr[1,3]returns 'ell'.Final Answer:
str[1,3] -> Option AQuick Check:
Substring from index 1, length 3 = 'ell' [OK]
Quick Trick: Use [start, length] to slice substrings easily [OK]
Common Mistakes:
- Using range with wrong end index
- Confusing start and length parameters
- Using negative indices incorrectly
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