Unit 2 Cycle 2 Day 14: Iteration + Selection (Filtering)
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Unit 2, Selection & Iteration • Cycle 2
Day 14 Advanced Practice • Harder Difficulty
Focus: Loop Filtering
Hard
Iteration + Selection (Filtering)
Advanced Practice Question
Format: Iteration + Selection (Filtering)
What is printed?
What is printed?
"apcs-keyword">int sum = "apcs-number">0;
"apcs-keyword">for ("apcs-keyword">int i = "apcs-number">1; i <= "apcs-number">6; i++)
{
"apcs-keyword">if (i % "apcs-number">2 != "apcs-number">0)
{
sum += i;
}
}
System.out.println(sum);
Difficulty: Hard |
Topic: Iteration + Selection (Filtering) |
Cycle: 2 (Advanced)
Why This Answer?
Only odd i values are added: 1 + 3 + 5 = 9.
Common Mistake
Watch Out!
Accidentally adding evens because of a flipped condition (`== 0` vs `!= 0`).
AP Exam Strategy
When filtering in a loop, identify which values pass the `if` condition.
Master This Topic
This Cycle 2 HARD question tests loop filtering. Review Unit 2 concepts to build mastery of selection and iteration.
- Understanding loop filtering
- Tracing code execution accurately
- Avoiding common pitfalls
Ready for More Challenges?
Cycle 2 questions prepare you for the hardest AP CSA exam questions.
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