1. Write a script in MATLAB to perform the following operations on the sentence

str = A quiet frog jumps when vexed by lazy ducks.

a. Convert the sentence to lower case.

b. Eliminate punctuation (letters that arent alphabetic or space).

c. Count the words.

d. Put the words in alphabetical order.

e. Count the letters.

f. Put the letters in alphabetical order.

g. (Read about the commands unique and setdiff). Are any letters missing?