Why heterogeneous containers are needed in MATLAB - Test Your Understanding

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a cell array that can hold different data types.

MATLAB

myCell = [1];

Drag options to blanks, or click blank then click option'

Aarray(1, 2, 3)

B[1, 2, 3]

C(1, 2, 3)

D{1, 'text', 3.14}

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets creates a numeric array, not a heterogeneous container.

Using parentheses creates a function call, not a container.

A cell array in MATLAB is created using curly braces {} and can hold different types of data like numbers and strings.

2fill in blank

medium

Complete the code to access the second element of a heterogeneous cell array.

MATLAB

secondElement = myCell[1];

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A(2)

B{2}

C[2]

D<2>

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or square brackets instead of curly braces to access cell content.

Use curly braces {} to access the content of a cell in a cell array.

3fill in blank

hard

Fix the error in the code that tries to store different data types in a numeric array.

MATLAB

myArray = [1, 2, [1]];

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A4.5

B3

C'text'

Dtrue

Attempts:

3 left

💡 Hint

Common Mistakes

Trying to put text inside square brackets creates an error.

Numeric arrays cannot hold text. To store different types, use a cell array instead.

4fill in blank

hard

Fill both blanks to create a heterogeneous container and access its first element.

MATLAB

myContainer = [1];
firstItem = myContainer[2];

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A{42, 'hello', [1, 2, 3]}

B[42, 'hello', [1, 2, 3]]

C1

D(1)

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets to create the container.

Using parentheses instead of curly braces to access elements.

Use curly braces to create a cell array and curly braces with index to access its content.

5fill in blank

hard

Fill all three blanks to create a heterogeneous container, add a new element, and access it.

MATLAB

myCell = [1];
myCell[2] = [3];
newElement = myCell{4};

Drag options to blanks, or click blank then click option'

A{10, 'data', true}

B4

C'new item'

D3

Attempts:

3 left

💡 Hint

Common Mistakes

Using square brackets for assignment or access.

Assigning to an index that does not exist without expanding the cell array.

Create a cell array, assign a new element at position 4, then access it with curly braces.