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Questions and Answers
Which syntax correctly defines an array with the integers 1, 2, and 3?
Which syntax correctly defines an array with the integers 1, 2, and 3?
In most programming languages, the index of the first element in an array is one.
In most programming languages, the index of the first element in an array is one.
False (B)
What is the purpose of the pop() function in relation to arrays?
What is the purpose of the pop() function in relation to arrays?
To remove elements from an array.
An array where the index starts at one is known as a ______ array.
An array where the index starts at one is known as a ______ array.
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Match the following array definitions with their characteristics:
Match the following array definitions with their characteristics:
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What will happen when the line 'highscores = 8' is executed in the program 'highscores = [125,63,35,12]'?
What will happen when the line 'highscores = 8' is executed in the program 'highscores = [125,63,35,12]'?
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The append() function is used to add multiple elements to an array.
The append() function is used to add multiple elements to an array.
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What is the purpose of the extend() function in arrays?
What is the purpose of the extend() function in arrays?
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The function used to remove the last item from an array is called ______.
The function used to remove the last item from an array is called ______.
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Match the following array functions with their purposes:
Match the following array functions with their purposes:
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What would be the output of printing the array 'highscores' using the print function directly?
What would be the output of printing the array 'highscores' using the print function directly?
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Using an asterisk (*) before the array name in the print function will display the elements in a list format.
Using an asterisk (*) before the array name in the print function will display the elements in a list format.
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How can the elements of an array be printed each on a new line?
How can the elements of an array be printed each on a new line?
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To print the elements of an array without brackets and commas, you can use an asterisk () before the name of the array, like this: print(______).
To print the elements of an array without brackets and commas, you can use an asterisk () before the name of the array, like this: print(______).
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Match the printing method with its description:
Match the printing method with its description:
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Which programming construct allows for repeating a block of code based on a condition?
Which programming construct allows for repeating a block of code based on a condition?
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An array can only hold a single type of data.
An array can only hold a single type of data.
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What function in programming can be used to count the number of elements in an array?
What function in programming can be used to count the number of elements in an array?
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To create an array, the identifier is followed by the equals symbol and then open and closed ______.
To create an array, the identifier is followed by the equals symbol and then open and closed ______.
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Match the programming constructs with their descriptions:
Match the programming constructs with their descriptions:
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What is the purpose of slicing an array?
What is the purpose of slicing an array?
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In an array, each value is referred to as an element.
In an array, each value is referred to as an element.
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What is the difference between a variable and an array?
What is the difference between a variable and an array?
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The len() function can be used to remove elements from an array.
The len() function can be used to remove elements from an array.
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What is the syntax for using the slice function?
What is the syntax for using the slice function?
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The function _______ sorts the elements of an array into ascending order.
The function _______ sorts the elements of an array into ascending order.
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Match the following array functions with their descriptions:
Match the following array functions with their descriptions:
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What will the following code output: print(len([10, 20, 30, 40]))?
What will the following code output: print(len([10, 20, 30, 40]))?
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The slice() function modifies the original array.
The slice() function modifies the original array.
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How many elements are removed from the array using the clear() function?
How many elements are removed from the array using the clear() function?
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What does the function max() do?
What does the function max() do?
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User input cannot be used in array functions like append or insert.
User input cannot be used in array functions like append or insert.
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What does the remove() function do when used with an array?
What does the remove() function do when used with an array?
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The function min() is used to return the ______ value in the array.
The function min() is used to return the ______ value in the array.
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Match the following functions to their descriptions:
Match the following functions to their descriptions:
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In the provided example, what input is expected from the user when removing a highscore?
In the provided example, what input is expected from the user when removing a highscore?
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The method ages.append(5) always appends the value 5 to the ages array regardless of user input.
The method ages.append(5) always appends the value 5 to the ages array regardless of user input.
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To append a user inputted value to an array, you would use the syntax ______(choice).
To append a user inputted value to an array, you would use the syntax ______(choice).
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Flashcards
Array
Array
A group of elements stored in a specific order, accessed using sequential indexes.
Array declaration
Array declaration
The way to create an array. It uses square brackets to enclose the elements, separated by commas.
Array index
Array index
A number representing the position of an element in an array, starting from zero.
Array access
Array access
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Zero-indexed array
Zero-indexed array
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What is an array?
What is an array?
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What's an element in an array?
What's an element in an array?
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How to create an array?
How to create an array?
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How do you access elements in an array?
How do you access elements in an array?
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How to update elements in an array?
How to update elements in an array?
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Why are separate variables inefficient for storing many values?
Why are separate variables inefficient for storing many values?
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How do arrays address the limitations of individual variables?
How do arrays address the limitations of individual variables?
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What are the advantages of using arrays?
What are the advantages of using arrays?
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Append function
Append function
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Extend function
Extend function
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Insert function
Insert function
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Remove function
Remove function
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Pop function
Pop function
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Printing an array directly
Printing an array directly
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Printing an array using *
Printing an array using *
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Printing an array using * and sep="\n"
Printing an array using * and sep="\n"
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For loop for arrays
For loop for arrays
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Printing array elements with a loop
Printing array elements with a loop
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What does array_name.clear()
do?
What does array_name.clear()
do?
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How do you find the length of an array?
How do you find the length of an array?
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What does the slice()
function do in an array?
What does the slice()
function do in an array?
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What are the parameters of the slice()
function?
What are the parameters of the slice()
function?
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What does the reverse()
function do in an array?
What does the reverse()
function do in an array?
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What does the sort()
function do in an array?
What does the sort()
function do in an array?
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What does the count()
function do in an array?
What does the count()
function do in an array?
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What is the parameter of the count()
function?
What is the parameter of the count()
function?
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min()
min()
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max()
max()
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User Input in Array Functions
User Input in Array Functions
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Removing elements from an array using user input
Removing elements from an array using user input
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Appending values to an array using user input
Appending values to an array using user input
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Comparing appending methods
Comparing appending methods
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Study Notes
Programming Techniques
- Arrays are used to store multiple values under a single name.
- Each value within an array is called an element.
- Variables store a single value.
Creating Variables and Arrays
- Variables store a single value.
- Arrays store multiple values using a single name.
Creating Arrays
- Create an array using
identifier = [element1, element2, ...]
. - Elements can be integers or strings.
- An empty array can also be created where elements are added later.
Accessing Values in Arrays
- Each element in an array has an index.
- The index refers to its position.
array_name[index]
accesses a specific element.- The index is used for printing, updating and removing elements
Indexing
- Most programming languages (like Python, C, Java) use zero-based indexing (index starts at 0).
- Some use one-based indexing (index starts at 1).
- Example for accessing elements:
ages = [125,63,35,19,56]
,ages[0] = 125
accesses element 1.
Adding and Removing Elements
- Append(): Adds an element to the end of an array.
- Extend(): Adds multiple elements to the end of an array.
- Insert(): Inserts an element at a specified index.
- Remove(): Removes the first occurrence of a specific element.
- Pop(): Removes and returns the element at a specified index.
- Clear(): Removes all elements from an array.
Counting the Length of Arrays
len(array_name)
counts the number of elements in an array.
Slicing Arrays
array_name[slice(start, stop, step)]
returns a specific range of elements.- Does not modify the original array.
- Uses the same parameters as slicing strings
Other Array Functions
reverse()
: Reverses the elements in an array.sort()
: Sorts an array in ascending order.count(value)
: Counts the occurrences of a specific element.min()
: Returns the minimum value (alphabetical if strings).max()
: Returns the maximum value (alphabetical if strings).
Using User Input in Array Functions
- User input can be used in array functions.
- You can input an element you want to remove, add or modify in the array.
Comparing Appending Methods
- Normal method:
array.append(value)
appends immediately. - User input method: Takes user input to add to array using
append
function.
Printing Array Elements
print(array_name)
prints the array with commas and square brackets.print(*array_name)
removes these to print elements individually.- Using a separator using
sep
parameter:print(*array_name, sep=' ')
.
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Description
This quiz focuses on programming techniques related to arrays and variables. You'll explore how arrays are used to store multiple values, access specific elements, and understand indexing methods in various programming languages. Test your knowledge on creating and manipulating arrays effectively.