use matlab and provide code

Question $6$:

Write a script that $($a$)$ generates a vector with $20$ random integer elements with integers

between $-10$ and $10,($b$)$ replaces all the negative integers with random integers between

$-10$ and $10,($c$)$ repeats $($b$)$ until all the elements are positive. The program should also

count how many times $($b$)$ is repeated before all the elements are positive. When done,

the program displays the vector and a statement that states how many iterations were

needed for generating the vector.