Sequence 1 · Topic 3.10 Lists

Transfer reassessment

About 20 minutes. Take this after reviewing anything you missed on the diagnostic. The ideas are the same, but the contexts, conditions and procedures are new, so you can't just recall the earlier answers. Nothing here is recorded.

Question 1 of 5A weather station logs winter temperatures. What does CountBelow([-3, 0, 4, -1], 0) return?

Select one answer.

Pseudocode

1PROCEDURE CountBelow(temps, limit)2{3  count ← 04  FOR EACH t IN temps5  {6    IF (t < limit)7    {8      count ← count + 19    }10  }11  RETURN count12}

A.3
B.4
C.2
D.-4

Question 2 of 5A cold week was recorded as [-6, -2, -9]. What does Warmest return?

Select one answer.

Pseudocode

1PROCEDURE Warmest(temps)2{3  warmest ← 04  FOR EACH t IN temps5  {6    IF (t > warmest)7    {8      warmest ← t9    }10  }11  RETURN warmest12}

A.-2
B.0
C.-6
D.-9

Question 3 of 5A running club counts days with at least 30 minutes of running. What does CountLongRuns([45, 10, 30]) return?

Select one answer.

Pseudocode

1PROCEDURE CountLongRuns(minutes)2{3  total ← 04  FOR EACH m IN minutes5  {6    IF (m ≥ 30)7    {8      total ← total + 19    }10    RETURN total11  }12  RETURN total13}

Question 4 of 5Which two test cases would show that CountLongRuns is wrong (its result differs from a correct complete traversal)? Choose two.
Select exactly two answers (0 of 2 selected).
- A.[45]
- B.[10, 40]
- C.[ ]
- D.[30, 35]
Question 5 of 5Which statement about HasNegative is true?
Select one answer.
Pseudocode
```
1PROCEDURE HasNegative(temps)2{3  FOR EACH t IN temps4  {5    IF (t < 0)6    {7      RETURN true8    }9  }10  RETURN false11}
```
- A.It is correct: one negative reading is enough to answer, so stopping early is intended.
- B.It is wrong because a RETURN inside a loop always stops after the first element.
- C.It returns false for [3, -1] because RETURN false is the last line.
- D.It needs a counter variable to be correct.

Your practice so far

Check an answer to see its rationale.