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3 years ago

What dynamic would best describe the genre of rock and roll?

1 answer:

3 0

Popular music characterized by vocals, hardback beat , loud volume and electric guitar :))) I really hope that helped if not let me know! :) <span />

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Given an array arr, of type int, along with two int variables i and j, write some code that swaps the values of arr[i] and arr[j

Inessa05 [86]

You'll need a helper variable for this, so depending on your programming language, the solution becomes:

int helper;

helper = arr[i];

arr[i] = arr[j];

arr[j] = helper;

3 0

3 years ago

a ____ is a horizontal or vertical bar that appears when the contents of an area may not be visible completely on the screen.

pav-90 [236]

The answer is a Scroll bar, the description fits perfectly because you need to move it to see more of the content you are viewing, and it wont be completely. when the item does appear completely on screen then the bar is relatively large and there is no need for scrolling, however the opposite occurs during when you cannot see all of it.

5 0

3 years ago

The factorial of n is equal to ______.

alexdok [17]

Answer:

n! = n*(n-1)*(n-2)*(n-3)* ... *2*1

Explanation:

The factorial operator is simply a mathematical expression of the product of a stated integer and all integers below that number down to 1. Consider these following examples:

4! = 4 * 3 * 2 * 1

4! = 12 * 2 * 1

4! = 24

6! = 6 * 5 * 4 * 3 * 2 * 1

6! = 30 * 4 * 3 * 2 * 1

6! = 120 * 3 * 2 * 1

6! = 360 * 2 * 1

6! = 720

So, the factorial of n would follow the same as such:

n! = n * (n-1) * (n-2) * ... * 2 * 1

Cheers.

5 0

3 years ago

Local variables:A. Lose the values stored in them between calls to the method in which the variable is declared

Serjik [45]

Answer:

All of the above

Explanation:

A local variable is a variable which is declared within a method or is an argument passed to a method, it scope is usually local (i.e. it is hidden from other method). it can also have the same name as a local variable in another method and it loses the values stored in them between calls to the method in which the variable is declared. So all the option listed above are correct.

3 0

3 years ago

What is the value of the totalsString variable after the following code is executed? var totals = [141.95, 212.95, 411, 10.95];

Alex Ar [27]

<h2>Answer:</h2>

141.95|212.95|312.95|10.95|

<h2>Explanation:</h2>

<em>Reformatting the code snippet and giving it line numbers;</em>

1. var totals = [141.95, 212.95, 411, 10.95];

2. totals[2] = 312.95;

3. var totalsString = "";

4. for (var i = 0; i < totals.length; i++) {

5. totalsString += totals[i] + "|";

6. }

Line 1 creates an array called totals with four elements.

First element = totals[0] =141.95

Second element = totals[1] = 212.95

Third element = totals[2] = 411

Fourth element = totals[3] = 10.95

Line 2 replaces the value of the third element <em>totals[2]</em> = 411 with 312.95.

Therefore the array <em>totals = </em>[141.95, 212.95, 312.95, 10.95]

Line 3 creates an empty string called totalsString

Lines 4 - 6 create a for loop that cycles from i=0 to i<totals.length

totals.length = 4 (which is the number of items in the array totals)

This means that the loop cycles from i=0 to i<4

During cycle 1 when i = 0, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[0] + "|" //substitute the values

totalsString = "" + 141.95 + "|"

totalsString = 141.95|

During cycle 2 when i = 1, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[1] + "|" //substitute the values

totalsString = "141.95|" + 212.95 + "|"

totalsString = 141.95|212.95|

During cycle 3 when i = 2, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[2] + "|" //substitute the values

totalsString = "141.95|212.95|" + 312.95 + "|"

totalsString = 141.95|212.95|312.95|

During cycle 4 when i = 3, the expression inside the for loop executes as follows;

totalsString = totalsString + totals[3] + "|" //substitute the values

totalsString = "141.95|212.95|312.95|" + 10.95 + "|"

totalsString = 141.95|212.95|312.95|10.95|

At the end of the execution, totalsString = 141.95|212.95|312.95|10.95|

7 0

3 years ago