Write the class Calculator including: a function called addthat takes two parameters containing double values and returns their sum
a function called subtractthat takes two parameters containing double values and returns their difference (subtract the second from the first)
a function called multiply that takes two parameters containing double values and returns their product
a function called divide that takes two parameters containing double values and returns the value of the first divided by the second. If the second number is a zero, do not divide, and return "You can't divide by zero!"

Aletter or menu command that starts an action when the user presses the designated letter and the alt key together is called what?

Write a program called assignment3 (saved in a file assignment3.java) that computes the greatest common divisor of two given integers. one of the oldest numerical algorithms was described by the greek mathematician, euclid, in 300 b.c. it is a simple but very e↵ective algorithm that computes the greatest common divisor of two given integers. for instance, given integers 24 and 18, the greatest common divisor is 6, because 6 is the largest integer that divides evenly into both 24 and 18. we will denote the greatest common divisor of x and y as gcd(x, y). the algorithm is based on the clever idea that the gcd(x, y) = gcd(x ! y, y) if x > = y and gcd(x, y) = gcd(x, y ! x) if x < y. the algorithm consists of a series of steps (loop iterations) where the “larger” integer is replaced by the di↵erence of the larger and smaller integer. this continues until the two values are equal. that is then the gcd.

Sarah is having a hard time finding a template for her advertising business that she may be able to use at a later date and also make it available to her colleagues