M.1 Write a MATLAB script that accomplishes the following items. Write an efficient, notated, reusable script that can be scaled and adjusted for future assignments. (a) Create an array of integer indices, n, from -20 to 20. (b) Create a sequence equal to the unit step function u[n]. (c) Using what you created in (a) and (b) above, form the following sequence: (d) Now create sequence h[n]: n '2πη x[n] = (1) * cos (²) u[n] 13 h[n]u[n]u[n - 3] (e) Using (c) and (d), find y[n] below using the conv( ) MATLAB command. Write the conv() command so that y[n] has the same length as x[n]. y[n] = x[n] *h[n] (f) Plot the results from (b), (c), (d), and (e) using the stem() command in MATLAB. Use the subplot command to show each plot on one figure. Each plot should be neatly scaled, have a title, and axis labels.

Note: Bartleby expert already solved part A, and told me to post the question again for part B. Course: Intro to MATLAB

While sorting a set of names, representing the names as an array of pointers is preferable to representing the names as a two dimensional array of characters because A. storage needed will be proportional to the size of the data B. execution will be faster C. swapping process becomes easier and faster D. All of the above

JAVA Task, by using ArrayList   The program reads manatee names from the standard input stream and from time to time prints a sorted portion of the list of names. All the manatee names in the input are given in the order in which the necropsy was performed. You can imagine a unique timestamp associated with each necropsy. The names are not necessarily unique (many of the manatees have the same name). Interspered in the standard input stream are queries that begin with the question mark character. Queries ask for an alphabetical list of manatee names to be printed to the standard output stream. The list depends only on the names upto that point in the input stream and does include any manatee names that appear in the input stream after the query. The list does not contain all the names of the previous necropsies, but only a selection of them. A query provides the names of two manatees, say A and B. The response to the query drops necropsies performed before the first named A and all the…