C Sharp (C#) - Strings and StringBuilder
Given a string
data = "ID:12345;Name:John;Age:30", which code snippet correctly extracts the value of "Name"?Given a string data = "ID:12345;Name:John;Age:30", which code snippet correctly extracts the value of "Name"?
hard🚀 Application Q8 of 15
Step-by-Step Solution
Solution:
Step 1: Locate start index of "Name:" plus its length
IndexOf("Name:") + 5 skips "Name:" to start at actual name.Step 2: Calculate length by subtracting start from index of ";Age"
Length = IndexOf(";Age") - (IndexOf("Name:") + 5) extracts "John" correctly.Final Answer:
string name = data.Substring(data.IndexOf("Name:") + 5, data.IndexOf(";Age") - data.IndexOf("Name:") - 5); -> Option BQuick Check:
Use IndexOf and Substring with correct offsets [OK]
Quick Trick: Add length of key to start index for correct substring [OK]
Common Mistakes:
MISTAKES- Not adding 5 to skip "Name:"
- Using wrong length calculation
- Extracting key name instead of value
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