Test 4 P1

Which code segment results in "true" being returned if a number is even? Replace "MISSING CONDITION" with the correct code segment.

function isEven(num){ if(MISSING CONDITION){ return true; } else { return false; } }

• num % 2 == 0

• num % 0 == 2

• num % 1 == 0

• num % 1 == 2

Here is the API for a robot library.

// moves the robot forward function moveForward(); // turns the robot to the left function rotateLeft(); // turns the robot to the right function rotateRight(); // checks if a robot can move in any direction // direction {string} - the direction to be checked // return {Boolean} - true if the robot can move in that direction, otherwise returns false function canMove(direction);

Which code segment will guarantee that the robot makes it to the grey square without hitting a wall or a barrier (black square)?

• 
• 
• 
• 

What will be printed to the console after this program runs?

var numbers = [2, 5, 3, 1, 6] function changeNums(numList, addNum, subtractNum){ for(var i=0; i<numList.length; i++){ if(numList[i] % 3 == 0){ numList[i] = numList[i] + addNum; } else { numList[i] = numList[i] - subtractNum; } } } changeNums(numbers, 3, 2); console.log(numbers);

• [2, 5, 3, 1, 6]

• [0, 3, 6, -1, 9]

• [-1, 2, 6, -2, 8]

• [5, 2, 6, 3, 9]

Which function calls would provide the most helpful test of this function?

Remember: With tests, you are attempting to figure out all the possible ways the function could be broken.

function findMin(num1, num2){ if(num1 < num2){ return num1; } else { return num2; } }

• findMin(-1, 0)
  findMin(2,4)
  findMin(5,10)

• findMin(5,3)
  findMin(7,2)
  findMin(5,1)

• findMin(1,1)
  findMin(-2,2)
  findMin(0,3)

•   findMin(-1,1)
  findMin(1,-1)
  findMin(1,1)

You have imported a library with the birthMonth() function. Based on the API, how many strings are inputed to calculate the birth month?

// calculate birth month based on the day of the month, day of the week, and the birth year // dayMonth {number} - a day of a month from 1 to 31 // dayWeek {string} - the name of the day of the week // year {number} - the birth year // return {string} - the month you were born BirthdayLibrary.birthMonth(dayMonth, dayWeek, year);

• 1

• 4

• 0

• 3

listAverage() returns the average number in a list. Which of these functions does this correctly?

• 
• 
• 
• 

What is printed to the console?

console.log(15 % 4);

• 2

• 3

• 4

• 1

Which term refers to a solution to a large problem that is based on the solutions of smaller subproblems.

• procedural abstraction

• API

• parameter

• library

This function checks if a character is a vowel. If it is, it returns true. Otherwise, it returns false.

Where should return false; be written in the code?

function checkVowel(character){ var vowels = ["a", "e", "i", "o", "u"]; for(var i=0; i<vowels.length; i++){ if(vowels[i] == character){ return true; OPTION A } OPTION B } OPTION C } OPTION D

• OPTION A

• OPTION B

• OPTION C

•   OPTION D

This function finds the minimum number in a list. What should <MISSING CODE SEGMENT> be replaced with in order for this function to operate as expected?

function min(numList){ var min = numList[0]; for(var i=0; i<numList.length; i++){ if(numList[i] < min){ <MISSING CODE SEGMENT> } } return min; }

• numList[i] = min;

• min = numList[i];

• min = numList;

• numList = min;