AP CSA Unit 1 Day 14: Indexof Substring Computed Indices
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Advanced Practice Question
String s = "Hello World";
int pos = s.indexOf("o");
System.out.println(s.substring(pos, pos + 3));This question tests your understanding of chained operations. The correct answer demonstrates precise knowledge of how Java handles indexof + substring computed indices.
Students often make errors with indexof + substring computed indices by not carefully tracing execution or understanding the underlying concept.
This Cycle 2 HARD question requires careful attention to detail and understanding of how Java behaves in this scenario.
For questions testing indexof + substring computed indices, always trace execution step-by-step. Write down intermediate values. Don't skip steps - the AP exam rewards precise understanding of Java behavior.
Master This Topic
This Cycle 2 HARD question tests indexof + substring computed indices. Review Unit 1 concepts to build mastery of primitive types, objects, and String manipulation.
- Understanding chained operations
- Tracing code execution accurately
- Avoiding common pitfalls
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