Please answer this question using Matlab.

Homework Problem 4: Character Arrays In this homework problem, you will do some more operations with character arrays. 1. Define the array sentenceA to be equal to 'John is an expert at MATLAB programming." Write a command to find the length of sentenceA, and assign this to the variable ALength. . Write a command to search string array sentenceA for the pattern 'expert' and assign the starting position of the beginning of the pattern to variable position1. 4. Write a command to create an array sentenceB which stores the contents of array sentenceA in reverse. 5. Define array sentenceC to be 'He also plays tennis and basketball well. 6. Create an array sentenceD which is the concatenation of array sentenceC to array sentenceA, in which sentenceA is in front. 7. Write a command to create an array sentenceE which stores the contents of array sentenceD in uppercase letters only