Cell array creation in MATLAB - Interactive Code Practice

Practice - 5 Tasks

1fill in blank

easy

Complete the code to create a 1x3 cell array named C.

MATLAB

C = [1](1,3);

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

Alist

Barray

Cmatrix

Dcell

Attempts:

3 left

💡 Hint

Common Mistakes

Using 'array' or 'matrix' instead of 'cell' to create cell arrays.

Trying to create cell arrays with square brackets.

The function 'cell' creates a cell array of specified size in MATLAB.

2fill in blank

medium

Complete the code to assign the string 'hello' to the first cell of cell array C.

MATLAB

C[1] = 'hello';

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A{1}

B[1]

C(1)

D(1,1)

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses or square brackets instead of curly braces for cell content assignment.

Using multiple indices when only one is needed for a 1D cell array.

Use curly braces { } to access or assign contents of a cell in MATLAB.

3fill in blank

hard

Fix the error in the code to create a 2x2 cell array with numbers 1 to 4 inside.

MATLAB

C = [1](2,2);
C[2] = 1;
C[3] = 2;
C[4] = 3;
C[5] = 4;

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

Acell

B(1,1)

C{1,1}

D(1)

E{1}

F(1,2)

G{1,2}

H(2,1)

I{2,1}

J(2,2)

K{2,2}

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of curly braces for cell content assignment.

Using single index for 2D cell array assignment.

Use 'cell' to create the array. Use curly braces with row and column indices to assign values inside cells.

4fill in blank

hard

Fill both blanks to create a cell array with mixed types: a string and a numeric array.

MATLAB

C = [1](1,2);
C[2] = 'text';

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

Acell

B{1,1}

C{1,2}

D(1,2)

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of curly braces for assignment.

Using wrong indices for the cell assignment.

Use 'cell(1,2)' to create the cell array. Assign the string to the first cell using curly braces with indices.

5fill in blank

hard

Fill all three blanks to create a 2x2 cell array and assign a string, a number, and a vector to different cells.

MATLAB

C = [1](2,2);
C[2] = 'hello';
C[3] = 42;
C{2,2} = [1, 2, 3];

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

Acell

B{1,1}

C{1,2}

D{2,1}

Attempts:

3 left

💡 Hint

Common Mistakes

Using parentheses instead of curly braces for assignment.

Mixing up the indices for cell assignment.

Create the cell array with 'cell(2,2)'. Assign 'hello' to C{1,1} and 42 to C{2,1}. The vector is assigned to C{2,2}.