AP CSP Create Task Practice - Build Up to All Six Requirements

AP CSP · Create Performance Task · Coding Practice

Create Task Practice - Six Requirements, One Program

You have written 72 pieces of a program. The Create Task wants one program that holds six things at once. These four problems add them one at a time.

Every coding page in Big Idea 3 gave you one idea with a known answer. None of them gave you input, and none of them asked for a procedure that loops over a list. Those are two of the six things the Create Task scores. Problems 1 to 3 build the same step log up from two requirements to all six. Problem 4 is your own program, on your own topic, checked the way the Create Task Builder checks it.

Problem 1 of 4

Requirements in this problem: 2 of 6

InputListProcedureAlgorithmCallOutput

Your program is being sent two lines: a name, then a step goal. Read both, then print exactly Ada is aiming for 8000 steps a day. Do not type the name or the number into your code. Read them, or this problem has taught you nothing.

Expected output: Ada is aiming for 8000 steps a day.

Show AP pseudocode reference
name ← INPUT()
goal ← INPUT()
DISPLAY(name + " is aiming for " + goal + " steps a day.")

Input sent to your program

Ada
8000
In Python, input() returns one line as a string, already without its newline. In JavaScript the four starter lines do the same job: call INPUT() once per line. Both give you a string, so you can join them straight onto the sentence without converting anything.

Problem 2 of 4

Requirements in this problem: 4 of 6

InputListProcedureAlgorithmCallOutput

A week of step counts is already in your starter code. Your program is being sent one line: the goal. Read it, then go through the list and work out two things, how many days went over the goal and which day was the highest. Print exactly two lines: Days over goal: N then Best day: N. Read the goal as a number, not a string.

Expected output: Days over goal: 3
Best day: 12030

Show AP pseudocode reference
goal ← INPUT()
steps ← [6200, 9100, 7450, 12030, 8000, 5300, 10400]
over ← 0
best ← 0
FOR EACH day IN steps
{
  IF(day > goal)
  {
    over ← over + 1
  }
  IF(day > best)
  {
    best ← day
  }
}
DISPLAY("Days over goal: " + over)
DISPLAY("Best day: " + best)

Input sent to your program

8000
Input arrives as text, so "8000" compares as a string until you convert it. Use int(...) in Python or Number(...) in JavaScript. Then watch the boundary: one day in the list is exactly 8000, and 8000 is not over 8000. If you get 4 instead of 3, you wrote >= where the prompt said over.

Problem 3 of 4

Requirements in this problem: 6 of 6

InputListProcedureAlgorithmCallOutput

Same list, same week. Now write a procedure daysOverGoal(dayList, goal) that takes the list and a goal as parameters, loops through the list, counts the days over that goal, and returns the count. Read one goal from input, then call your procedure twice: once with the goal you were sent, once with 10000. Print Days over 8000: N then Days over 10000: N, using the goal you read rather than a typed 8000.

Expected output: Days over 8000: 3
Days over 10000: 2

Show AP pseudocode reference
PROCEDURE daysOverGoal(dayList, goal)
{
  over ← 0
  FOR EACH day IN dayList
  {
    IF(day > goal)
    {
      over ← over + 1
    }
  }
  RETURN(over)
}
goal ← INPUT()
steps ← [6200, 9100, 7450, 12030, 8000, 5300, 10400]
DISPLAY("Days over " + goal + ": " + daysOverGoal(steps, goal))
DISPLAY("Days over 10000: " + daysOverGoal(steps, 10000))

Input sent to your program

8000
The loop and the if both move inside the procedure. That is the whole point: the scored requirement is an algorithm with selection and iteration living inside a procedure you wrote, not next to it. The procedure returns a number and prints nothing, so both printed lines happen outside it. If your two lines show the same count, you probably ignored the goal parameter and used the input variable inside the procedure instead.

Problem 4 of 4

Requirements detected: 0 of 6

InputListProcedureAlgorithmCallOutput

Now your own program, on your own topic, and nothing here is checked against a right answer because there is not one. Write something small that does all six: takes input, stores something in a list, has a procedure with a parameter that contains both an if and a loop, calls that procedure, and prints output. Edit the input box below to whatever your program should be sent. When you run it you get your real output plus a reading on all six requirements.

No expected output. This one is checked on the six requirements, not on what it prints.

Show AP pseudocode reference
PROCEDURE yourProcedure(aList, aValue)
{
  FOR EACH item IN aList
  {
    IF(some test)
    {
      do something
    }
  }
  RETURN(result)
}
thing ← INPUT()
aList ← [ your data ]
DISPLAY(yourProcedure(aList, thing))

Input sent to your program (edit this)

Small is correct here. A list of five things, a procedure that counts or filters them, one line of output. The Create Task is scored on whether the six elements are present and whether you can explain them, not on how ambitious the program is. If a requirement stays unlit, the usual causes are a procedure with no parameter, a procedure you defined but never called, or a loop that is next to the procedure rather than inside it.

Now write the real one

The Create Task Builder is the same six-requirement check with a proper editor, a Java option, and room for the whole program. Your work here does not carry over, so take your problem 4 code with you.

Open the Create Task Builder

Your code runs on a secure external service. Nothing you write or type here is stored.

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