Question

Write a MATLAB script in which you initialize the following vector:

ANIMALS = ["cow", "cat", "dog", "fox", "lion", "bear", "sea lion", "deer", "dolphin"];

a. In the script, use logical indexing to create a vector called C_ANIMALS that is comprised of the animals from the above ANIMALS vector starting with the letter c. This should be done with just one line of code. HINT: MATLAB provides a built-in function that checks whether a string starts with a specified letter. Feel free to research and use this built-in function.

b. In the script, use logical indexing to create a vector called LETTERS_3 that is comprised of the animals from the above ANIMALS vector that are three letters long. This should be done with just one line of code. HINT: MATLAB provides a built-in function that checks whether a string’s length is equal to a certain number. Feel free to research and use this built-in function.

c. In the script, use logical indexing to create a vector called D_GREATER_3 that is comprised of the animals from the above ANIMALS vector that are greater than three letters long and start with the letter d. This should be done with just one line of code.

d. Display all the vectors created in this script: ANIMALS, C_ANIMALS, LETTERS_3, and D_GREATER_3.

Answer 1

ANIMALS = ["cow", "cat", "dog", "fox", "lion", "bear", "sea lion", "deer", "dolphin"];

C_ANIMALS = ANIMALS(startsWith(ANIMALS,"c"));

LETTERS_3 = ANIMALS(strlength(ANIMALS)==3);

D_GREATER_3 = ANIMALS(strlength(ANIMALS)>3 & startsWith(ANIMALS,"d"));

disp(ANIMALS)

disp(C_ANIMALS)

disp(LETTERS_3)

disp(D_GREATER_3