C Sharp (C#) - Strings and StringBuilder
Which method would you use to find the first occurrence index of a substring in a string?
Which method would you use to find the first occurrence index of a substring in a string?
easy🧠 Conceptual Q2 of Q15
Step-by-Step Solution
Solution:
Step 1: Identify method for position search
IndexOf returns the zero-based index of the first occurrence of a substring in a string.Step 2: Differentiate from other methods
Substring extracts part of string, Contains returns boolean, Replace changes text.Final Answer:
IndexOf() -> Option BQuick Check:
IndexOf method = position finder [OK]
Quick Trick: IndexOf returns position of substring or -1 [OK]
Common Mistakes:
MISTAKES- Using Substring to find position
- Confusing Contains with IndexOf
- Expecting Replace to find substring
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