AP Computer Science A (AP CSA) FRQ Studio

Practice released FRQs in FRQ Studio.

Students write Java responses in the browser, choose released FRQs by year, save drafts locally, run rule-based self-checks, and reveal solution outlines only after attempting.

2025 AP Computer Science A FRQ 1

DogWalker

Write two methods for a dog walker. The first chooses how many dogs to walk for one hour using company helper methods. The second runs an inclusive shift, calculates pay per dog, and adds the correct bonus.

Recommended time

22 minutes

Difficulty

Medium-hard

Self-check coverage

0 / 8

Open the official prompt before writing. This page intentionally summarizes the task and provides practice support instead of reproducing the full College Board prompt.

Open Official Prompt

What to write

Part A: decide how many dogs can be walked during one hour, update the company, and return the number walked.
Part B: loop from startHour through endHour, call walkDogs for each hour, calculate base pay, add any earned bonus, and return total pay.

Starter shape

public int walkDogs(int hour)
{
    // Write part (a) here.
}

public int dogWalkShift(int startHour, int endHour)
{
    // Write part (b) here.
}

Common traps

Looping with hour < endHour instead of hour <= endHour.
Calculating pay from available dogs instead of the number returned by walkDogs.
Forgetting to call updateDogs in the one-hour method.
Adding the bonus only when both conditions are true instead of when either condition is true.

Your response

Cleared when this page reloads. 24 words.

Rule-based feedback

This checks for common structural signals. It is not official scoring.

Gets the available dog count for the requested hour.Mark manually if your code satisfies this with a different valid approach.Limits the walk count so it never exceeds maxDogs.Mark manually if your code satisfies this with a different valid approach.Updates the dog-walking company with the chosen hour and dog count.Mark manually if your code satisfies this with a different valid approach.Returns the number of dogs walked for the one-hour method.Mark manually if your code satisfies this with a different valid approach.Uses an inclusive loop from startHour through endHour.Mark manually if your code satisfies this with a different valid approach.Calls walkDogs inside dogWalkShift.Mark manually if your code satisfies this with a different valid approach.Calculates base pay as 5 dollars per dog walked.Mark manually if your code satisfies this with a different valid approach.Adds the 3 dollar bonus for full capacity or peak-hour walks.Mark manually if your code satisfies this with a different valid approach.

Reflection after checking