Code.org - Unit 6 Lists, Loops, and Traversals

Front

A school is developing a program to keep track of information about students and their class schedules. In which of the following instances would a data abstraction be most helpful? The program includes individual variables to store the names of each student rather than a single list of students, A program includes multiple comments that could be combined into a single comment, A program includes repeated programming statements that could be moved inside a loop, A program includes repeated code that could be moved inside a function.

Back

The program includes individual variables to store the names of each student rather than a single list of students.

Front

var list = [10, 5, 15]; for(var i = 0; <INSERT CODE>; i++){ console.log(list[i]); Which of the following will result in ONLY all the items in list being printed to the console if placed where the program reads <INSERT CODE> and the program is run i < list[list.length], i < list.length, i < list[0], i < list[1]

Back

i < list.length

Front

wordList is a list of words that currently contains the values ["tree", "rock", "air"]. Which line will result in the list containing the values ["air", "rock", "air"]? Options: wordList[0] = wordList[2], wordList[2] = wordList[0], insertItem(wordList, 0, "air"), removeItem(wordList,0)

Back

wordList[0] = wordList[2]

Front

What will be displayed in the console when this program runs?
var numList = [10,20,30];
console.log(numList[numList.length-1]);

Back

30

Front

What will be displayed when this program finishes running?
var numbersList = [20, 10, 5]
appendItem(numbersList, 50)
appendItem(numbersList,100)
removeItem(numbersList,1)
insertItem(numbersList, 0, 30)
console.log(numbersList.length)

Back

5

Front

What will happen when the following code is executed? var count = 0 while (count != 5){ console.log(count); count = count + 2; }

Back

The program will result in an infinite loop

Front

for(var i = 0; i < 4; i++){ console.log(i); } What will be the output?

Back

0
1
2
3

Front

What will the following program display in the console?
var sum = 0;
for(var i = 0; i < 5; i++){
sum = sum + i; }
console.log(sum);

Back

10

Front

Which program will move the robot (represented by a triangle facing up) to the gray square following the path shown on the grid?

Back

Front

Which of the following programs will result in filteredNames only containing the names of students who are 17 or older?

Back