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Tutorial Ten Quiz - Exploring Arrays, Loops and Conditional Statements

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Which of the following statements is used to terminate any program loop or conditional statement?

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Mar 1, 2020

Cards (25)

Section 1

(25 cards)

Which of the following statements is used to terminate any program loop or conditional statement?

Front

break

Back

Identify the syntax of the while loop.

Front

while (continue) {commands}

Back

Identify the general syntax of the do/while loop.

Front

do {commands}while (continue);

Back

The slice() method reverses the order of items in an array, making the last items first and the first items last.

Front

False

Back

The _____ statement stops processing the commands in the current iteration of the loop and proceeds to the next iteration instead of stopping the program loop altogether.

Front

continue

Back

The _____ method creates a new array by passing the original array items to the callback function, which returns the equivalent value of the array items.

Front

array.map(callback [, thisArg])

Back

Identify a method that inserts new items at the front of an array.

Front

unshift()

Back

The getDate() method in a calendar app returns an integer ranging from 0 (Sunday) to 6 (Saturday).

Front

False

Back

Gregor, a software developer, is developing a calendar application. He has to use several if conditional statements to ensure that the calendar displays the exact number of days present in each month of each year. He creates a dayCount array to keep track of the number of days in each month. Gregor wants to create a condition to ensure that all the years divisible by 4 should contain 29 days in February. Which of the following statements should he use?

Front

if (thisYear % 4 === 0) {dayCount[1] = 29;}

Back

Identify a compare function that sorts numeric values in descending order.

Front

function descending(a, b) {return b - a;}

Back

Which of the following determines the current size of an array?

Front

array.length

Back

Identify a method that tests whether the condition returned by the callback function holds for all items in an array .

Front

array.every(callback [, thisArg])

Back

Identify the general structure of a for loop.

Front

for (start;continue;update){commands}

Back

Identify the output of the following code. var x = [3, 45, 1234, 24]; x.sort();

Front

1234, 24, 3, 45

Back

A(n) _____ is a collection of values organized under a single name.

Front

array

Back

The _____ method performs an action similar to the forEach() method except that the function it calls returns a value that can be used to match the contents of an existing array into a new array.

Front

map()

Back

Identify the expression in which the initial value of the day variable will be set to match the first day of the calendar month.

Front

var day = new Date(calDate.getFullYear(), calDate.getMonth(), 1);

Back

Identify the structure of an if statement

Front

if (condition) {commands}

Back

Identify a true statement of array .find(callback [, thisArg]) method.

Front

It returns the value of the first element in the array that passes a test in the callback function.

Back

Identify the expression used to reference array values.

Front

array[i]

Back

What is the output of the following code? var x = [4, 7, 11]; x.forEach(stepUp); function stepUp(value, i, arr) { arr[i] = value + 1; }

Front

5, 8, 12

Back

Gregor, a software developer, is developing a calendar application. He has to use several if conditional statements to ensure that the calendar displays the exact number of days present in each month of each year. He creates a dayCount array to keep track of the number of days in each month. Gregor wants to ensure February contains 29 days only in the year 2020 as it is a leap year. Which of the following should Gregor use to set the value in the dayCount array?

Front

if (thisYear === 2020) {dayCount[1] = 29;}

Back

Identify the syntax of the statement label.

Front

label: statements

Back

Identify a method that decreases array by keeping only those items that return a value of true from the callback function.

Front

array.reduce(callback [, thisArg])

Back

Which of the following functions increases the value of each item in an array by 1?

Front

StepUp()

Back

Tutorial Ten Quiz - Exploring Arrays, Loops and Conditional Statements

Preview this deck

Which of the following statements is used to terminate any program loop or conditional statement?

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Cards (25)

Which of the following statements is used to terminate any program loop or conditional statement?

break

Identify the syntax of the while loop.

while (continue) {commands}

Identify the general syntax of the do/while loop.

do {commands}while (continue);

The slice() method reverses the order of items in an array, making the last items first and the first items last.

False

The _____ statement stops processing the commands in the current iteration of the loop and proceeds to the next iteration instead of stopping the program loop altogether.

continue

The _____ method creates a new array by passing the original array items to the callback function, which returns the equivalent value of the array items.

array.map(callback [, thisArg])

Identify a method that inserts new items at the front of an array.

unshift()

The getDate() method in a calendar app returns an integer ranging from 0 (Sunday) to 6 (Saturday).

False

if (thisYear % 4 === 0) {dayCount[1] = 29;}

Identify a compare function that sorts numeric values in descending order.

function descending(a, b) {return b - a;}

Which of the following determines the current size of an array?

array.length

Identify a method that tests whether the condition returned by the callback function holds for all items in an array .

array.every(callback [, thisArg])

Identify the general structure of a for loop.

for (start;continue;update){commands}

Identify the output of the following code. var x = [3, 45, 1234, 24]; x.sort();

1234, 24, 3, 45

​ A(n) _____ is a collection of values organized under a single name.

array

The _____ method performs an action similar to the forEach() method except that the function it calls returns a value that can be used to match the contents of an existing array into a new array.

map()

Identify the expression in which the initial value of the day variable will be set to match the first day of the calendar month.

var day = new Date(calDate.getFullYear(), calDate.getMonth(), 1);

Identify the structure of an if statement

if (condition) {commands}

Identify a true statement of array .find(callback [, thisArg]) method.

It returns the value of the first element in the array that passes a test in the callback function.

Identify the expression used to reference array values.

array[i]

What is the output of the following code? var x = [4, 7, 11]; ​ x.forEach(stepUp); ​ function stepUp(value, i, arr) { arr[i] = value + 1; }

5, 8, 12

if (thisYear === 2020) {dayCount[1] = 29;}

Identify the syntax of the statement label.

label: statements

Identify a method that decreases array by keeping only those items that return a value of true from the callback function.

array.reduce(callback [, thisArg])

Which of the following functions increases the value of each item in an array by 1?

StepUp()

A(n) _____ is a collection of values organized under a single name.

What is the output of the following code? var x = [4, 7, 11]; x.forEach(stepUp); function stepUp(value, i, arr) { arr[i] = value + 1; }